How To Fix OQ_H127 - Error in message structure definition. IDoc type could not be generated

SAP Error Message - Details

• Message type: E = Error

• Message class: OQ_H - IS-Oil SSR : Message pool Interfaces/IAC/BAPI development

• Message number: 127

• Message text: Error in message structure definition. IDoc type could not be generated

What causes this issue?

The IDOC type for the clearing house settlement message structure could
not be generated. There are one or more active footer segments in the
structure for which the corresponding header segments are not active.

System Response

The system will not proceed with generating the IDOC type for this
message structure.

How to fix this error?

Please correct the message structure definition for the clearing house
settlement.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OQ_H127 - Error in message structure definition. IDoc type could not be generated ?

  The SAP error message OQ_H127, which states "Error in message structure definition. IDoc type could not be generated," typically occurs when there is an issue with the definition of the IDoc (Intermediate Document) structure in the SAP system. This error can arise due to various reasons, including inconsistencies in the IDoc type definition, missing segments, or issues with the underlying data dictionary objects.
  Causes:
  
  Inconsistent IDoc Definition: The IDoc type may have inconsistencies in its structure, such as missing segments or fields that are not properly defined.
  Data Dictionary Issues: Problems with the underlying data dictionary objects (like tables or structures) that the IDoc relies on can lead to this error.
  Transport Issues: If the IDoc type was recently transported from another system, there may be issues with the transport that caused the IDoc definition to be incomplete or corrupted.
  Authorization Issues: Lack of proper authorizations to access or modify IDoc definitions can also lead to this error.
  Version Mismatch: If there are version mismatches between the IDoc type and the application that is trying to use it, this can cause errors.
  
  Solutions:
  
  Check IDoc Definition: Go to transaction WE30 (IDoc Type Development) and verify the IDoc type definition. Ensure that all segments and fields are correctly defined and that there are no inconsistencies.
  Recreate IDoc Type: If the IDoc type is corrupted, consider recreating it. You can do this by copying an existing IDoc type and modifying it as needed.
  Check Data Dictionary Objects: Use transaction SE11 to check the underlying data dictionary objects (tables, structures) that are used in the IDoc definition. Ensure that they are correctly defined and active.
  Transport Check: If the IDoc type was recently transported, check the transport logs for any errors. You may need to re-transport the IDoc type or correct any issues in the transport.
  Authorization Check: Ensure that you have the necessary authorizations to access and modify IDoc definitions. Consult with your SAP security team if needed.
  Debugging: If the issue persists, consider debugging the process that generates the IDoc to identify any specific points of failure.
  
  Related Information:
  
  Transaction Codes:
  
  WE30: IDoc Type Development
  WE31: IDoc Segment Development
  WE20: Partner Profile
  SE11: Data Dictionary
  
  
  SAP Notes: Check SAP Notes related to IDoc issues for any known bugs or fixes.
  Documentation: Review SAP documentation on IDocs for best practices in defining and managing IDoc types.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with SAP support or your internal SAP technical team for further assistance.