How To Fix DH191 - Data element & of parameter & is a generated proxy type

SAP Error Message - Details

• Message type: E = Error

• Message class: DH - DD: Messages for search helps

• Message number: 191

• Message text: Data element & of parameter & is a generated proxy type

What causes this issue?

This data element is generated for ABAP proxies.
Usage of such generated proxy types is not allowed in the search help.

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

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DH191 - Data element & of parameter & is a generated proxy type ?

  The SAP error message DH191 indicates that there is an issue with a data element in a generated proxy type. This typically occurs in the context of SAP's integration scenarios, particularly when working with web services or when using the SAP Process Integration (PI) or SAP Process Orchestration (PO) environments.
  Cause:
  The error message DH191 usually arises due to one of the following reasons:
  
  
  Incorrect Data Element Definition: The data element specified in the error message may not be defined correctly or may not be compatible with the expected data type in the proxy interface.
  
  
  Proxy Generation Issues: The proxy class may have been generated incorrectly, possibly due to changes in the underlying data model or inconsistencies in the service definition.
  
  
  Version Mismatch: There may be a mismatch between the versions of the service interface and the generated proxy, especially if changes were made to the service after the proxy was generated.
  
  
  Transport Issues: If the proxy was transported from one system to another, there may be inconsistencies or missing dependencies in the target system.
  
  
  Solution:
  To resolve the DH191 error, you can follow these steps:
  
  
  Check Data Element Definition: Verify that the data element mentioned in the error message is correctly defined in the Data Dictionary (SE11). Ensure that it is compatible with the expected data type.
  
  
  Regenerate the Proxy: If the data element is correct, try regenerating the proxy class. You can do this by navigating to the relevant service interface in the Enterprise Services Repository (ESR) and regenerating the proxy.
  
  
  Check for Changes: If there have been recent changes to the service interface or the underlying data model, ensure that the proxy is updated accordingly. You may need to re-import the service definition.
  
  
  Transport Consistency: If the proxy was transported, check for any missing objects or dependencies in the target system. Ensure that all necessary objects are present and correctly configured.
  
  
  Debugging: If the issue persists, consider debugging the proxy call to identify the exact point of failure. This may provide additional insights into the root cause of the error.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for any specific notes or updates related to the error message DH191.
  
  
  Related Information:
  
  Transaction Codes: You may find it useful to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SOAMANAGER (Service Administration) to investigate and manage service definitions and proxies.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Community Forums: Engage with the SAP Community or forums like SAP Community Network (SCN) for discussions and solutions shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the DH191 error in your SAP environment.