Error codes: 42I65 and 42I66 (#375)

Error codes introduced in [PR Formatting
temporals](neo-technology/neo4j#32184)

---------

Co-authored-by: Reneta Popova <[email protected]>

Author: JoelBergstrand

modules/ROOT/content-nav.adoc

@@ -259,6 +259,8 @@
 **** xref:errors/gql-errors/42I62.adoc[]
 **** xref:errors/gql-errors/42I63.adoc[]
 **** xref:errors/gql-errors/42I64.adoc[]
+**** xref:errors/gql-errors/42I65.adoc[]
+**** xref:errors/gql-errors/42I66.adoc[]
 **** xref:errors/gql-errors/42N00.adoc[]
 **** xref:errors/gql-errors/42N01.adoc[]
 **** xref:errors/gql-errors/42N02.adoc[]

modules/ROOT/pages/errors/gql-errors/42I65.adoc

@@ -0,0 +1,31 @@
+:page-role: new-2025.09
+= 42I65
+
+== Status description
+error: syntax error or access rule violation - invalid pattern character. An invalid character is used in the pattern. Verify that all characters are supported by `{ <<valueType>> }`.
+
+== Example scenario
+
+For example, when trying to format using a year character on a time-only type:
+
+[source,cypher]
+----
+RETURN format(time(), "yyyy") AS formatted
+----
+
+You will receive an error with GQLSTATUS xref:errors/gql-errors/42001.adoc[42001].
+This error has a cause detailed in xref:errors/gql-errors/42I65.adoc[42I65] and status description:
+
+
+[source]
+----
+error: syntax error or access rule violation - invalid pattern character. An invalid character is used in the pattern. Verify that all characters are supported by `ZONED TIME`.
+----
+
+
+ifndef::backend-pdf[]
+[discrete.glossary]
+== Glossary
+
+include::partial$glossary.adoc[]
+endif::[]

modules/ROOT/pages/errors/gql-errors/42I66.adoc

@@ -0,0 +1,31 @@
+:page-role: new-2025.09
+= 42I66
+
+== Status description
+error: syntax error or access rule violation - pattern parsing failed. Pattern parsing failed. Make sure that an even number of escapes are used in the pattern.
+
+== Example scenario
+
+For example, when formatting a duration:
+
+[source,cypher]
+----
+RETURN format(duration("P1Y"), "y 'year")
+----
+
+You will receive an error with GQLSTATUS xref:errors/gql-errors/42001.adoc[42001].
+This error has a cause detailed in xref:errors/gql-errors/42I66.adoc[42I66] and status description:
+
+
+[source]
+----
+error: syntax error or access rule violation - pattern parsing failed. Pattern parsing failed. Make sure that an even number of escapes are used in the pattern.
+----
+
+
+ifndef::backend-pdf[]
+[discrete.glossary]
+== Glossary
+
+include::partial$glossary.adoc[]
+endif::[]

modules/ROOT/pages/errors/gql-errors/index.adoc

@@ -629,9 +629,10 @@ Status description:: error: data exception - omitting mandatory field for proper
 
 Status description:: error: data exception - index belongs to constraint. Index belongs to constraint `{ <<constrDescrOrName>> }`.
 
+[role=label--new-2025.07]
 === xref:errors/gql-errors/22NBD.adoc[22NBD]
 
-Status description:: error: data exception - unsupported struct tag. Unsupported struct tag: 0x56. `{ <<value>> }`.
+Status description:: error: data exception - unsupported struct tag. Unsupported struct tag: `{ <<value>> }`.
 
 
 [[invalid-transaction-state]]
@@ -1056,6 +1057,16 @@ Status description:: error: syntax error or access rule violation - wrong subcla
 
 Status description:: error: syntax error or access rule violation - unsupported operation. `{ <<msg>> }` currently not supported after `+NEXT+` `{ <<context>> }`.
 
+[role=label--new-2025.09]
+=== xref:errors/gql-errors/42I65.adoc[42I65]
+
+Status description:: error: syntax error or access rule violation - invalid pattern character. An invalid character is used in the pattern. Verify that all characters are supported by `{ <<valueType>> }`.
+
+[role=label--new-2025.09]
+=== xref:errors/gql-errors/42I66.adoc[42I66]
+
+Status description:: error: syntax error or access rule violation - pattern parsing failed. Pattern parsing failed. Make sure that an even number of escapes are used in the pattern.
+
 [role=label--changed-2025.03]
 === xref:errors/gql-errors/42N00.adoc[42N00]