ARERR [9991] Invalid join qualifier for this join form.

A call to the ARGetListEntryWithMultiSchemaFields function failed because the join criteria for one of the forms in the function's query from list (queryFromList) did not reference a field in the preceding item in the list. Review the fieldId element in the join criteria (ARMultiSchemaQualifierStruct) and retry the operation.
For more information, see these topics in the C API Reference:

• ARGetListEntryWithMultiSchemaFields function
  
• ARMultiSchemaQueryFromStruct structure
  
• ARMultiSchemaQualifierStruct structure
  

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