How To Fix OQ_H303 - Error in ALE set-up. Data could not be transferred

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 303

• Message text: Error in ALE set-up. Data could not be transferred

What causes this issue?

The system has found an error in the ALE set-up.

System Response

The data could not be sent.

How to fix this error?

Please check the ALE distribution model.

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_H303 - Error in ALE set-up. Data could not be transferred ?

  The SAP error message OQ_H303 indicates that there is an issue with the Application Link Enabling (ALE) setup, which is preventing data from being transferred between systems. This error typically arises in scenarios involving distributed systems where data needs to be exchanged, such as in a landscape with multiple SAP systems.
  Causes of OQ_H303 Error
  
  
  Configuration Issues: The ALE configuration may not be set up correctly. This includes settings in the Distribution Model, Logical Systems, and Partner Profiles.
  
  
  Missing or Incorrect Logical Systems: The logical systems involved in the data transfer may not be defined correctly or may not exist in the system.
  
  
  Inconsistent Data: The data being transferred may not meet the required criteria or may be inconsistent, leading to transfer failures.
  
  
  Authorization Issues: The user or system may not have the necessary authorizations to perform the data transfer.
  
  
  Network Issues: There may be network connectivity issues between the systems involved in the data transfer.
  
  
  Technical Errors: There could be underlying technical issues, such as problems with the RFC (Remote Function Call) connections.
  
  
  Solutions to OQ_H303 Error
  
  
  Check ALE Configuration:
  
  Verify the ALE configuration settings in transaction WE20 (Partner Profiles) and BD64 (Distribution Model).
  Ensure that the correct message types and logical systems are defined.
  
  
  
  Validate Logical Systems:
  
  Check that the logical systems are correctly defined in transaction SCC4 and that they match the ones used in the ALE configuration.
  
  
  
  Review Data Consistency:
  
  Ensure that the data being transferred is valid and meets the necessary criteria. Check for any inconsistencies in the data.
  
  
  
  Check Authorizations:
  
  Ensure that the user or system has the necessary authorizations to perform the data transfer. This can be checked in transaction SU53 after the error occurs.
  
  
  
  Test RFC Connections:
  
  Use transaction SM59 to test the RFC connections between the systems. Ensure that they are correctly configured and operational.
  
  
  
  Review Logs:
  
  Check the application logs for more detailed error messages. You can use transaction SLG1 to view the logs related to the specific message type.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that may address this specific error. You can search for notes in the SAP Support Portal.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  WE20: Partner Profiles
  BD64: Distribution Model
  SM59: RFC Destinations
  SLG1: Application Log
  SCC4: Client Administration
  
  
  
  Documentation: Review SAP documentation on ALE and IDoc processing for more detailed information on configuration and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the cause of the OQ_H303 error in your SAP system.