# Matterhorn Protocol checks
| Checkpoint | Index | Failure condition | Section | Type | How | Related Tags |
|---|---|---|---|---|---|---|
| Checkpoint 01: Real content tagged | 01-001 | Artifact is tagged as real content. | UA1:7.1-1 | Object | Human | Artifact |
| Checkpoint 01: Real content tagged | 01-002 | Real content is marked as artifact. | UA1:7.1-1 | Object | Human | Artifact |
| Checkpoint 01: Real content tagged | 01-003 | Content marked as Artifact is present inside tagged content. | UA1:7.1-1 | Object | Machine | Artifact |
| Checkpoint 01: Real content tagged | 01-004 | Tagged content is present inside content marked as Artifact. | UA1:7.1-1 | Object | Machine | Artifact |
| Checkpoint 01: Real content tagged | 01-005 | Content is neither marked as Artifact nor tagged as real content. | UA1:7.1-2 | Object | Machine | |
| Checkpoint 01: Real content tagged | 01-006 | The structure type and attributes of a structure element are not semantically appropriate for the structure element. All of the following structure types must be taken into account: Document, Part, Art, Sect, Div, BlockQuote, Caption, TOC, TOCI, Index, NonStruct, Private, P, H, H1, H2, H3, H4, H5, H6, L, LI, Lbl, LBody, Table, TR, TH, TD, THead, TBody, TFoot, Span, Quote, Note, Reference, BibEntry, Code, Link, Annot, Ruby, Warichu, RB, RT, RP, WT, WP, Figure, Formula, Form.
NOTE 1: Structure type is not semantically appropriate if the nature of the content inside the structure element does not match the structure type of the structure element.
NOTE 2: For any non-standard structure types, the standard structure type to which the type is role-mapped shall be used for validation.
NOTE 3: Tables are regular when the number of logical cells is equal in each row after accounting for rowspan and colspan attributes. While PDF/UA-1 does not prohibit irregular tables, irregular tables are almost always a strong indicator of improper table structure. It may be a good idea to raise a warning when such tables are encountered, but it is not required by the Matterhorn Protocol.
NOTE 4: The value of table cell attributes is a function of the cell’s semantic role in the table’s structure. Therefore, a TH cell may not include a Scope attribute with an inappropriate value. | UA1:7.1-2 | Object | Human | |
| Checkpoint 02: Role Mapping | 02-001 | One or more non-standard tag’s mapping does not terminate with a standard type.
NOTE: Although PDF/UA defines the nomenclature for heading levels above H6 (Hn), these are not standard structure types (as defined in ISO 32000-1) and therefore Hn tags must (PDF/UA-1 7.1, paragraph 1) be rolemapped to a standard structure type. According to PDF/UA-1, PDF/UA-conforming processors are expected to ignore such mappings and respect the heading level. | UA1:7.1-3 | Doc | Machine | H, Hn |
| Checkpoint 02: Role Mapping | 02-002 | The mapping of one or more non-standard types is semantically inappropriate. | UA1:7.1-3 | Doc | Human | H, Hn |
| Checkpoint 02: Role Mapping | 02-003 | A circular mapping exists. | UA1:7.1-3 | Doc | Machine | |
| Checkpoint 02: Role Mapping | 02-004 | One or more standard types are remapped. | UA1:7.1-4 | Doc | Machine | |
| Checkpoint 03: Flickering | 03-001 | One or more Actions lead to flickering. | UA1:7.1-5 | Page | Human | |
| Checkpoint 03: Flickering | 03-002 | One or more multimedia objects contain flickering content. | UA1:7.1-5 | Object | Human | |
| Checkpoint 03: Flickering | 03-003 | One or more JavaScript actions lead to flickering. | UA1:7.1-5 | JS | Human | |
| Checkpoint 04: Color and Contrast | 04-001 | Information is conveyed by contrast, color, format or layout, or some combination thereof but the content is not tagged to reflect all meaning conveyed by the use of contrast, color, format or layout, or some combination thereof. | UA1:7.1-6 | Object | Human | |
| Checkpoint 05: Sound | 05-001 | Media annotation present, but audio content not available in another form.
NOTE: An example of another form is a transcript. | UA1:7.1-7 | Object | Human | Annot |
| Checkpoint 05: Sound | 05-002 | Audio annotation present, but content not available in another form.
NOTE: An example of another form is a transcript. | UA1:7.1-7 | Object | Human | Annot |
| Checkpoint 05: Sound | 05-003 | JavaScript uses beep function but does not provide another means of notification. | UA1:7.1-7 | JS | Human | |
| Checkpoint 06: Metadata | 06-001 | Document does not contain XMP metadata stream | UA1:7.1-8 | Doc | Machine | |
| Checkpoint 06: Metadata | 06-002 | The metadata stream in the Catalog dictionary does not include the PDF/UA identifier. | UA1:5 | Doc | Machine | |
| Checkpoint 06: Metadata | 06-003 | Metadata stream does not contain dc:title | UA1:7.1-8 | Doc | Machine | |
| Checkpoint 06: Metadata | 06-004 | dc:title does not clearly identify the document | UA1:7.1-8 | Doc | Human | |
| Checkpoint 07: Dictionary | 07-001 | ViewerPreferences dictionary of the Catalog dictionary does not contain DisplayDocTitle key. | UA1:7.1-9 | Doc | Machine | |
| Checkpoint 07: Dictionary | 07-002 | ViewerPreferences dictionary of the Catalog dictionary contains DisplayDocTitle key with a value of false. | UA1:7.1-9 | Doc | Machine | |
| Checkpoint 08: OCR Validation | 08-001 | OCR-generated text contains significant errors. | UA1:7.1-10 | Page | Human | |
| Checkpoint 08: OCR Validation | 08-002 | OCR-generated text is not tagged | UA1:7.1-10 | Page | Human | |
| Checkpoint 08: OCR Validation | 08-003 | Suspect entry has a value of true. | UA1:7.1-11 | Doc | Machine | |
| Checkpoint 09: Appropriate Tags | 09-001 | Tags are not in logical reading order. | UA1:7.2-1 | Doc | Human | Index, Reference, Art, TOC, TOCI, BlockQuote, BibEntry, Quote, Code, Note, Private, Document, DocumentFragment, Part, Div, Sect, Aside, NonStruct, Title, Sub, P, Hn, H, Lbl, Em, Strong, Span, Link, Annot, Form, Ruby, RB, RT, RP, Warichu, WT, WP, FENote, L, LI, LBody, Table, TR, TH, TD, THead, TBody, TFoot, Caption, Figure, Formula, Artifact |
| Checkpoint 09: Appropriate Tags | 09-002 | Structure elements are nested in a semantically inappropriate manner. (e.g. a table inside a heading). | UA1:7.2-1 | Object | Human | Index, Reference, Art, TOC, TOCI, BlockQuote, BibEntry, Quote, Code, Note, Private, Document, DocumentFragment, Part, Div, Sect, Aside, NonStruct, Title, Sub, P, Hn, H, Lbl, Em, Strong, Span, Link, Annot, Form, Ruby, RB, RT, RP, Warichu, WT, WP, FENote, L, LI, LBody, Table, TR, TH, TD, THead, TBody, TFoot, Caption, Figure, Formula, Artifact |
| Checkpoint 09: Appropriate Tags | 09-003 | The structure type (after applying any role-mapping as necessary) of a structure element is not semantically appropriate. | UA1:7.2-1 | Object | Human | Index, Reference, Art, TOC, TOCI, BlockQuote, BibEntry, Quote, Code, Note, Private, Document, DocumentFragment, Part, Div, Sect, Aside, NonStruct, Title, Sub, P, Hn, H, Lbl, Em, Strong, Span, Link, Annot, Form, Ruby, RB, RT, RP, Warichu, WT, WP, FENote, L, LI, LBody, Table, TR, TH, TD, THead, TBody, TFoot, Caption, Figure, Formula, Artifact |
| Checkpoint 09: Appropriate Tags | 09-004 | A table-related structure element is used in a way that does not conform to the syntax defined in ISO 32000-1, Table 337. | UA1:7.2-1 | Object | Machine | Table, TR, TH, TD, THead, TBody, TFoot |
| Checkpoint 09: Appropriate Tags | 09-005 | A list-related structure element is used in a way that does not conform to Table 336 in ISO 32000-1. | UA1:7.2-1 | Object | Machine | L, LI, Lbl, LBody |
| Checkpoint 09: Appropriate Tags | 09-006 | A TOC-related structure element is used in a way that does not conform to Table 333 in ISO 32000-1. | UA1:7.2-1 | Object | Machine | TOC, TOCI |
| Checkpoint 09: Appropriate Tags | 09-007 | A Ruby-related structure element is used in a way that does not conform to Table 338 in ISO 32000-1. | UA1:7.2-1 | Object | Machine | Ruby, RB, RT, RP |
| Checkpoint 09: Appropriate Tags | 09-008 | A Warichu-related structure element is used in a way that does not conform to Table 338 in ISO 32000-1. | UA1:7.2-1 | Object | Machine | Warichu, WT, WP |
| Checkpoint 10: Character Mappings | 10-001 | Character code cannot be mapped to Unicode. | UA1:7.2-2 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-001 | Natural language for text in page content cannot be determined. | UA1:7.2-3 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-002 | Natural language for text in “Alt”, “ActualText” and “E” attributes cannot be determined. | UA1:7.2-3 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-003 | Natural language in the Outline entries cannot be determined. | UA1:7.2-3 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-004 | Natural language in the “Contents” entry for annotations cannot be determined. | UA1:7.2-3 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-005 | Natural language in the TU key for form fields cannot be determined. | UA1:7.2-3 | Object | Machine | |
| Checkpoint 11: Declared Natural Language | 11-006 | Natural language for document metadata cannot be determined. | UA1:7.2-3 | Doc | Machine | |
| Checkpoint 11: Declared Natural Language | 11-007 | Natural language is not appropriate. | UA1:7.2-3 | All | Human | |
| Checkpoint 12: Stretchable Characters | 12-001 | Stretched characters are not represented appropriately. | UA1:7.2-4 | Object | Human | |
| Checkpoint 13: Graphics | 13-001 | Graphics objects other than text objects and artifacts are not tagged with a Figure tag. | UA1:7.3-1 | Object | Human | Figure |
| Checkpoint 13: Graphics | 13-002 | A link with a meaningful background does not include alternative text describing both the link and the graphic’s purpose. | UA1:7.3-1 | Object | Human | Link |
| Checkpoint 13: Graphics | 13-003 | A caption is not tagged with a Caption tag. | UA1:7.3-2 | Object | Human | Caption |
| Checkpoint 13: Graphics | 13-004 | Figure tag alternative or replacement text missing. | UA1:7.3-3 | Object | Machine | Figure |
| Checkpoint 13: Graphics | 13-005 | Actual text used for a Figure for which Alternative text is more appropriate. | UA1:7.3-4 | Object | Human | Figure |
| Checkpoint 13: Graphics | 13-006 | Graphics objects that possess semantic value only within a group of graphics objects is tagged on its own. | UA1:7.3-5 | Object | Human | Figure |
| Checkpoint 13: Graphics | 13-007 | A more accessible representation is not used. | UA1:7.3-6 | Object | Human | Figure |
| Checkpoint 14: Headings | 14-001 | Headings are not tagged. | UA1:7.4-1 | Doc | Human | H, Hn |
| Checkpoint 14: Headings | 14-002 | Does use numbered headings, but the first heading tag is not H1. | UA1:7.4.2-1 | Doc | Machine | H, Hn |
| Checkpoint 14: Headings | 14-003 | Numbered heading levels in descending sequence are skipped (Example: H3 follows directly after H1). | UA1:7.4-1 | Doc | Machine | H, Hn |
| Checkpoint 14: Headings | 14-004 | Numbered heading tags do not use Arabic numerals. | UA1:7.4.3-1 | Object | Human | H, Hn |
| Checkpoint 14: Headings | 14-005 | Content representing a 7th level (or higher) heading does not use an “H7” (or higher) tag. | UA1:7.4.3-1 | Object | Human | Hn |
| Checkpoint 14: Headings | 14-006 | A node contains more than one H tag. | UA1:7.4.4-1 | Object | Machine | H |
| Checkpoint 14: Headings | 14-007 | Document uses both H and H# tags.
NOTE: In weakly-structured documents, headings always take the form “Hn” (e.g. H1, H2, Hn) without intervening whitespace or numerical separators. | UA1:7.4.4-3 | Doc | Machine | H, Hn |
| Checkpoint 15: Tables | 15-001 | A row has a header cell, but that header cell is not tagged as a header. | UA1:7.5-1 | Object | Human | TH |
| Checkpoint 15: Tables | 15-002 | A column has a header cell, but that header cell is not tagged as a header. | UA1:7.5-1 | Object | Human | TH |
| Checkpoint 15: Tables | 15-003 | In a table not organized with Headers attributes and IDs, a TH cell does not contain a Scope attribute. | UA1:7.5-2 | Object | Machine | TH |
| Checkpoint 15: Tables | 15-004 | Content is tagged as a table for information that is not organized in rows and columns. | UA1:7.5-3 | Object | Human | Table |
| Checkpoint 15: Tables | 15-005 | A given cell’s header cannot be unambiguously determined. | UA1:7.5-2 | Object | Human | TH |
| Checkpoint 16: Lists | 16-001 | List is an ordered list, but no value for the ListNumbering attribute is present. | UA1:7.6-1 | Object | Human | L |
| Checkpoint 16: Lists | 16-002 | List is an ordered list, but the ListNumbering value is not one of the following: Decimal, UpperRoman, LowerRoman, UpperAlpha, LowerAlpha. | UA1:7.6-1 | Object | Human | L |
| Checkpoint 16: Lists | 16-003 | Content is a list but is not tagged as a list. | UA1:7.6-2 | Object | Human | L |
| Checkpoint 17: Mathematical Expressions | 17-001 | Content is a mathematical expression but is not tagged with a Formula tag. | UA1:7.7-1 | Object | Human | Formula |
| Checkpoint 17: Mathematical Expressions | 17-002 | Formula tag is missing an Alt attribute. | UA1:7.7-1 | Object | Machine | Formula |
| Checkpoint 17: Mathematical Expressions | 17-003 | Unicode mapping requirements are not met. | UA1:7.7-2 | Object | Machine | Formula |
| Checkpoint 18: Page Headers and Footers | 18-001 | Headers and footers are not marked as pagination artifacts. | UA1:7.8-1 | Object | Human | Artifact |
| Checkpoint 18: Page Headers and Footers | 18-002 | Header or footer artifacts are not classified as Header or Footer subtypes. | UA1:7.8-1 | Object | Human | Artifact |
| Checkpoint 19: Notes and References | 19-001 | Footnotes, endnotes, note labels are not tagged as Note. | UA1:7.9-1 | Object | Human | Note |
| Checkpoint 19: Notes and References | 19-002 | References are not tagged as Reference. | UA1:7.9-1 | Object | Human | Reference |
| Checkpoint 19: Notes and References | 19-003 | ID key of the Note tag is not present. | UA1:7.9-2 | Object | Machine | Note |
| Checkpoint 19: Notes and References | 19-004 | ID key of the Note tag is non-unique. | UA1:7.9-2 | Object | Machine | Note |
| Checkpoint 20: Optional Content | 20-001 | Name entry is missing or has an empty string as its value in an Optional Content Configuration Dictionary in the Configs entry in the OCProperties entry in the Catalog dictionary. | UA1:7.10-1 | Object | Machine | |
| Checkpoint 20: Optional Content | 20-002 | Name entry is missing or has an empty string as its value in an Optional Content Configuration Dictionary that is the value of the D entry in the OCProperties entry in the Catalog dictionary. | UA1:7.10-1 | Object | Machine | |
| Checkpoint 20: Optional Content | 20-003 | The AS key appears in an Optional Content Configuration Dictionary. | UA1:7.10-2 | Object | Machine | |
| Checkpoint 21: Embedded Files | 21-001 | The file specification dictionary for an embedded file does not contain F and UF keys. | UA1:7.11-1 | Object | Machine | |
| Checkpoint 22: Article Threads | 22-001 | Article threads do not reflect logical reading order. | UA1:7.12-1 | Object | Human | Art |
| Checkpoint 23: Digital Signatures | 23-001 | No test specific to digital signatures is required, however other provisions apply (form fields). | UA1:7.13-1 | -- | -- | |
| Checkpoint 24: Non-Interactive Forms | 24-001 | Non-interactive forms are not tagged with the PrintFields attribute. | UA1:7.14-1 | Object | Human | Form |
| Checkpoint 25: XFA | 25-001 | File contains the dynamicRender element with value “required”. | UA1:7.15-1 | Object | Machine | |
| Checkpoint 26: Navigation | 26-001 | The file is encrypted but does not contain a P key in its encryption dictionary. | UA1:7. 16-1 | Object | Machine | |
| Checkpoint 26: Navigation | 26-002 | The file is encrypted and does contain a P key but the 10th bit position of the P key is false. | UA1:7. 16-1 | Object | Machine | |
| Checkpoint 27: Annotations | 27-001 | No tests specific to navigation are required; use appropriate semantics. | UA1:7.17-1 | -- | -- | |
| Checkpoint 28: Security | 28-001 | An annotation whose hidden flag is not set and whose rectangle is not outside the crop-box is not in correct reading order. | UA1:7.18.1-2 | Object | Human | Annot |
| Checkpoint 28: Security | 28-002 | An annotation, excluding annotations of subtype Widget, Popup or Link, is not nested within an Annot tag. | UA1:7.18.1-2 | Object | Machine | Annot |
| Checkpoint 28: Security | 28-003 | An annotation whose hidden flag is not set and whose rectangle is not outside the crop-box is used for visual formatting but is not tagged according to its semantic function. | UA1:7.18.1-3 | Object | Human | Annot |
| Checkpoint 28: Security | 28-004 | An annotation other than annotations of type Link, Widget or Popup whose hidden flag is not set and whose rectangle is not outside the crop box and does not have a Contents key does not have an alternative description (in the form of an Alt entry in the enclosing structure element). | UA1:7.18.1-4 | Object | Machine | Annot |
| Checkpoint 28: Security | 28-005 | A form field whose hidden flag is not set and whose rectangle is not outside the crop-box and does not have a TU key does not have an alternative description (in the form of an Alt entry in the enclosing structure element). | UA1:7.18.1-4 | Object | Machine | Form |
| Checkpoint 28: Security | 28-006 | An annotation with subtype undefined in ISO 32000 does not meet 7.18.1. | UA1:7.18.2-1 | Object | Machine | Annot |
| Checkpoint 28: Security | 28-007 | An annotation of subtype TrapNet exists. | UA1:7.18.2-2 | Object | Machine | |
| Checkpoint 28: Security | 28-008 | A page containing an annotation does not contain a Tabs key. | UA1:7.18.3-1 | Object | Machine | |
| Checkpoint 28: Security | 28-009 | A page containing an annotation has a Tabs key with a value other than S. | UA1:7.18.3-1 | Object | Machine | |
| Checkpoint 28: Security | 28-010 | A widget annotation is not nested within a Form tag. | UA1:7.18.4-1 | Object | Machine | Form |
| Checkpoint 28: Security | 28-011 | A link annotation is not nested within a Link tag. | UA1:7.18.5-1 | Object | Machine | Link |
| Checkpoint 28: Security | 28-012 | A link annotation does not include an alternate description in the Contents Key. | UA1:7.18.5-2 | Object | Machine | Link |
| Checkpoint 28: Security | 28-013 | The IsMap key is present with a value of true but the functionality is not provided in some other way. | UA1:7.18.5-3 | Object | Human | Link |
| Checkpoint 28: Security | 28-014 | CT key is missing from the media clip data dictionary. | UA1:7.18.6.2-1 | Object | Machine | |
| Checkpoint 28: Security | 28-015 | Alt key is missing from the media clip data dictionary. | UA1:7.18.6.2-1 | Object | Machine | |
| Checkpoint 28: Security | 28-016 | File attachment annotations do not conform to 7.11. | UA1:7.18.7-1 | Object | Machine | |
| Checkpoint 28: Security | 28-017 | A PrinterMark annotation is included in logical structure. | UA1:7.18.8-1 | Object | Machine | |
| Checkpoint 28: Security | 28-018 | The appearance stream of a PrinterMark annotation is not marked as Artifact. | UA1:7.18.8-2 | Object | Machine | Artifact |
| Checkpoint 29: Actions | 29-001 | A script requires specific timing for individual keystrokes. | UA1:7. 19-1 | Object | Human | |
| Checkpoint 30: XObjects | 30-001 | A reference XObject is present. | UA1:7. 20-1 | Object | Machine | |
| Checkpoint 30: XObjects | 30-002 | Form XObject contains MCIDs and is referenced more than once. | UA1:7. 20-2 | Object | Machine | |
| Checkpoint 31: Fonts | 31-001 | A Type 0 font dictionary with encoding other than Identity-H and Identity-V has values for Registry in both CIDSystemInfo dictionaries that are not identical. | UA1:7.21.3-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-002 | A Type 0 font dictionary with encoding other than Identity-H and Identity-V has values for Ordering in both CIDSystemInfo dictionaries that are not identical. | UA1:7.21.3.1-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-003 | A Type 0 font dictionary with encoding other than Identity-H and Identity-V has a value for Supplement in the CIDSystemInfo dictionary of the CID font that is less than the value for Supplement in the CIDSystemInfo dictionary of the CMap. | UA1:7.21.3.1-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-004 | A Type 2 CID font contains neither a stream nor the name Identity as the value of the CIDToGIDMap entry. | UA1:7.21.3.2-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-005 | A Type 2 CID font does not contain a CIDToGIDMap entry. | UA1:7.21.3.2-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-006 | A CMap is neither listed as described in ISO 32000- 1:2008, 9.7.5.2, Table 118 nor is it embedded. | UA1:7.21.3.3-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-007 | The WMode entry in a CMap dictionary is not identical to the WMode value in the CMap stream. | UA1:7.21.3.3-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-008 | A CMap references another CMap which is not listed in ISO 32000-1:2008, 9.7.5.2, Table 118.
NOTE: For more information see ISO 32000-1 9.7.5.3, UseCMap entry. | UA1:7.21.3.3-2 | Object | Machine | |
| Checkpoint 31: Fonts | 31-009 | For a font used by text intended to be rendered the font program is not embedded.
NOTE: A glyph is used for rendering if the text render mode is not equal 3 (text render mode 3 is used for invisible text). | UA1:7.21.4.1-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-010 | A font program is embedded that is not legally embeddable for unlimited, universal rendering. | UA1:7.21.4.1-2 | Object | Human | |
| Checkpoint 31: Fonts | 31-011 | For a font used by text the font program is embedded but it does not contain glyphs for all of the glyphs referenced by the text used for rendering.
NOTE: A glyph is used for rendering if the text render mode is not equal to 3 (text render mode 3 is used for invisible text). | UA1:7.21.4.1-3 | Object | Machine | |
| Checkpoint 31: Fonts | 31-012 | The FontDescriptor dictionary of an embedded Type 1 font contains a CharSet string, but at least one of the glyphs present in the font program is not listed in the CharSet string. | UA1:7.21.4.2-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-013 | The FontDescriptor dictionary of an embedded Type 1 font contains a CharSet string, but at least one of the glyphs listed in the CharSet string is not present in the font program. | UA1:7.21.4.2-2 | Object | Machine | |
| Checkpoint 31: Fonts | 31-014 | The FontDescriptor dictionary of an embedded CID font contains a CIDSet string, but at least one of the glyphs present in the font program is not listed in the CIDSet string. | UA1:7.21.4.2-3 | Object | Machine | |
| Checkpoint 31: Fonts | 31-015 | The FontDescriptor dictionary of an embedded CID font contains a CIDSet string, but at least one of the glyphs listed in the CIDSet string is not present in the font program. | UA1:7.21.4.2-4 | Object | Machine | |
| Checkpoint 31: Fonts | 31-016 | For one or more glyphs, the glyph width information in the font dictionary and in the embedded font program differ by more than 1/1000 unit. | UA1:7.21.5-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-017 | A non-symbolic TrueType font is used for rendering, but none of the cmap entries in the embedded font program is a non-symbolic cmap. | UA1:7.21.6-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-018 | A non-symbolic TrueType font is used for rendering, but for at least one glyph to be rendered the glyph cannot be looked up by any of the non-symbolic cmap entries in the embedded font program. | UA1:7.21.6-2 | Object | Machine | |
| Checkpoint 31: Fonts | 31-019 | The font dictionary for a non-symbolic TrueType font does not contain an Encoding entry. | UA1:7.21.6-3 | Object | Machine | |
| Checkpoint 31: Fonts | 31-020 | The font dictionary for a non-symbolic TrueType font contains an Encoding dictionary which does not contain a BaseEncoding entry. | UA1:7.21.6-4 | Object | Machine | |
| Checkpoint 31: Fonts | 31-021 | The value for either the Encoding entry or the BaseEncoding entry in the Encoding dictionary in a non-symbolic TrueType font dictionary is neither MacRomanEncoding nor WinAnsiEncoding. | UA1:7.21.6-5 | Object | Machine | |
| Checkpoint 31: Fonts | 31-022 | The Differences array in the Encoding entry in a non-symbolic TrueType font dictionary contains one or more glyph names which are not listed in the Adobe Glyph List. | UA1:7.21.6-6 | Object | Machine | |
| Checkpoint 31: Fonts | 31-023 | The Differences array is present in the Encoding entry in a non-symbolic TrueType font dictionary but the embedded font program does not contain a (3,1) Microsoft Unicode cmap. | UA1:7.21.6-7 | Object | Machine | |
| Checkpoint 31: Fonts | 31-024 | The Encoding entry is present in the font dictionary for a symbolic TrueType font. | UA1:7.21.6-8 | Object | Machine | |
| Checkpoint 31: Fonts | 31-025 | The embedded font program for a symbolic TrueType font contains no cmap. | UA1:7.21.6-9 | Object | Machine | |
| Checkpoint 31: Fonts | 31-026 | The embedded font program for a symbolic TrueType font contains more than one cmap, but none of the cmap entries is a (3,1) Microsoft Symbol cmap. | UA1:7.21.6-10 | Object | Machine | |
| Checkpoint 31: Fonts | 31-027 | A font dictionary does not contain the ToUnicode entry and none of the following is true: - the font uses MacRomanEncoding, MacExpertEncoding or WinAnsiEncoding - the font is a Type 1 or Type 3 font and the glyph names of the glyphs referenced are all contained in the Adobe Glyph List or the set of named characters in the Symbol font, as defined in ISO 32000-1:2008, Annex D - the font is a Type 0 font, and its descendant CIDFont uses Adobe-GB1, Adobe-CNS1, AdobeJapan1 or Adobe-Korea1 character collections - the font is a non-symbolic TrueType font | UA1:7.21.7-1 | Object | Machine | |
| Checkpoint 31: Fonts | 31-028 | One or more Unicode values specified in the ToUnicode CMap are zero (0). | UA1:7.21.7-2 | Object | Machine | |
| Checkpoint 31: Fonts | 31-029 | One or more Unicode values specified in the ToUnicode CMap are equal to either U+FEFF or U+FFFE. | UA1:7.21.7-3 | Object | Machine | |
| Checkpoint 31: Fonts | 31-030 | One or more characters used in text showing operators reference the .notdef glyph. | UA1:7.21.8-1 | Object | Machine | |