Additional errors for 42NAC, 50N26, 51N7A

modules/ROOT/content-nav.adoc

@@ -369,6 +369,7 @@
 **** xref:errors/gql-errors/42NA8.adoc[]
 **** xref:errors/gql-errors/42NA9.adoc[]
 **** xref:errors/gql-errors/42NAA.adoc[]
+**** xref:errors/gql-errors/42NAC.adoc[]
 **** xref:errors/gql-errors/42NFC.adoc[]
 **** xref:errors/gql-errors/42NFD.adoc[]
 **** xref:errors/gql-errors/42NFE.adoc[]
@@ -392,6 +393,7 @@
 **** xref:errors/gql-errors/50N20.adoc[]
 **** xref:errors/gql-errors/50N21.adoc[]
 **** xref:errors/gql-errors/50N23.adoc[]
+**** xref:errors/gql-errors/50N26.adoc[]
 **** xref:errors/gql-errors/50N42.adoc[]
 *** xref:errors/gql-errors/index.adoc#system-configuration-or-operation-exceptions[System configuration or operation exceptions]
 **** xref:errors/gql-errors/51N00.adoc[]
@@ -469,6 +471,7 @@
 **** xref:errors/gql-errors/51N74.adoc[]
 **** xref:errors/gql-errors/51N76.adoc[]
 **** xref:errors/gql-errors/51N77.adoc[]
+**** xref:errors/gql-errors/51N7A.adoc[]
 *** xref:errors/gql-errors/index.adoc#procedure-exceptions[Procedure exceptions]
 **** xref:errors/gql-errors/52N01.adoc[]
 **** xref:errors/gql-errors/52N02.adoc[]

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

@@ -0,0 +1,31 @@
+:page-role: new-2025.11
+= 42NAC
+
+== Status description
+error: syntax error or access rule violation  - invalid `CREATE DATABASE` statement. The backup metadata script contains an invalid or missing `CREATE DATABASE` statement. The metadata script must contain exactly one `CREATE DATABASE` statement and it must use the parameter `$database`.
+
+== Explanation
+When using the `existingMetadata: use` option to restore a database from a backup, the backup metadata script must contain exactly one `CREATE DATABASE` statement.
+This statement must use the parameter `$database` to specify the name of the database being restored.
+If the metadata script is missing this statement or contains an invalid statement, the `CREATE DATABASE` operation will fail with this error.
+
+== Example scenario
+For example, try to create a database with using the following command:
+
+[source,cypher]
+----
+CREATE DATABASE `$databaseString` OPTIONS {existingMetadata:'use', seedUri:'$uri', existingData:'use'}
+----
+
+If the backup at `$uri` is missing the required `CREATE DATABASE` statement, an error will be thrown with GQLSTATUS 42NAC.
+
+== Possible solutions
+
+To resolve this issue, use another backup with a valid metadata script. 
+
+ifndef::backend-pdf[]
+[discrete.glossary]
+== Glossary
+
+include::partial$glossary.adoc[]
+endif::[]

modules/ROOT/pages/errors/gql-errors/50N26.adoc

@@ -0,0 +1,30 @@
+:page-role: new-2025.11
+= 50N26
+
+== Status description
+error: general processing exception - invalid backup metadata script. The backup metadata script contains invalid syntax.
+
+== Explanation
+When using the `existingMetadata: true` option to restore a database from a backup, the backup metadata script must contain valid Cypher statements.
+If the metadata script contains invalid syntax, the restore operation will fail with this error.
+
+== Example scenario
+For example, try to create a database with using the following command:
+
+[source,cypher]
+----
+CREATE DATABASE `$databaseString` OPTIONS {existingMetadata:'use', seedUri:'$uri', existingData:'use'}
+----
+
+If the backup at `$uri` contains invalid Cypher syntax in its metadata script, an error will be thrown with GQLSTATUS 50N26.
+
+== Possible solutions
+
+To resolve this issue, use another backup with a valid metadata script. 
+
+ifndef::backend-pdf[]
+[discrete.glossary]
+== Glossary
+
+include::partial$glossary.adoc[]
+endif::[]

modules/ROOT/pages/errors/gql-errors/51N7A.adoc

@@ -0,0 +1,29 @@
+:page-role: new-2025.11
+= 51N7A
+
+== Status description
+error: system configuration or operation exception - no admin user candidate. No admin user candidate is found. Use `neo4j-admin dbms set-default-admin` to select a valid admin.
+
+== Explanation
+When initializing the Neo4j DBMS for the first time, the system attempts to determine a default admin user.
+This user is responsible for performing administrative tasks on the database.
+If no valid admin user candidate can be found, the system will throw this error.
+
+== Example scenario
+For example, before the database starts up for the first time, execute the following command to set a default admin user that does not exist:
+
+[source]
+----
+neo4j-admin dbms set-default-admin user-that-does-not-exist
+----
+
+== Possible solutions
+
+To resolve this issue, run `neo4j-admin dbms set-default-admin` again with a user that does exist in the system.
+
+ifndef::backend-pdf[]
+[discrete.glossary]
+== Glossary
+
+include::partial$glossary.adoc[]
+endif::[]

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

@@ -1508,6 +1508,11 @@ Status description:: error: syntax error or access rule violation - system datab
 
 Status description:: error: syntax error or access rule violation - incorrectly formatted graph reference. Incorrectly formatted graph reference `{ <<input>> }`. Expected a single quoted or unquoted identifier. Separate name parts should not be quoted individually.
 
+[role=label--new-2025.11]
+=== xref:errors/gql-errors/42NAC.adoc[42NAC]
+
+Status description:: error: syntax error or access rule violation  - invalid `CREATE DATABASE` statement. The backup metadata script contains an invalid or missing `CREATE DATABASE` statement. The metadata script must contain exactly one `CREATE DATABASE` statement and it must use the parameter `$database`.
+
 === xref:errors/gql-errors/42NFC.adoc[42NFC]
 
 Status description:: error: syntax error or access rule violation - auth info validation error. Authentication and/or authorization could not be validated. See security logs for details.
@@ -1602,6 +1607,11 @@ Status description:: error: general processing exception - no such schema descri
 
 Status description:: error: general processing exception - transaction retry aborted. Transaction retry aborted after `{ <<count>> }` attempts. Retry timed out with a maximum retry duration of `{ <<timeAmount>> }` `{ <<timeUnit>> }`.
 
+[role=label--new-2025.11]
+=== xref:errors/gql-errors/50N26.adoc[50N26]
+
+Status description:: error: general processing exception - invalid backup metadata script. The backup metadata script contains invalid syntax.
+
 === xref:errors/gql-errors/50N42.adoc[50N42]
 
 Status description:: error: general processing exception - unexpected error. Unexpected error has occurred. See debug log for details.
@@ -1918,6 +1928,11 @@ Status description:: error: system configuration or operation exception - upgrad
 
 Status description:: error: system configuration or operation exception - not supported in this store format. `{ <<feat>> }` is not supported in `{ <<storeFormat>> }` store format.
 
+[role=label--new-2025.11]
+=== xref:errors/gql-errors/51N7A.adoc[51N7A]
+
+Status description:: error: system configuration or operation exception - no admin user candidate. No admin user candidate is found. Use `neo4j-admin dbms set-default-admin` to select a valid admin.
+
 
 [[procedure-exceptions]]
 == Procedure exceptions