How To Fix RSAOLTP026 - Mapping for DataSource &1 could not be generated

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAOLTP - Notifications in OLTP Source Environment

• Message number: 026

• Message text: Mapping for DataSource &1 could not be generated

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSAOLTP026 - Mapping for DataSource &1 could not be generated ?

  The SAP error message RSAOLTP026 indicates that there is an issue with generating the mapping for a DataSource in the context of SAP BW (Business Warehouse) or SAP Data Services. This error typically arises when there are inconsistencies or issues with the DataSource configuration or the underlying data model.
  Causes:
  
  Inconsistent DataSource Configuration: The DataSource may not be properly configured, or there may be missing or incorrect settings.
  Missing Fields: The DataSource might reference fields that do not exist in the underlying source system or have been deleted.
  DataSource Activation Issues: The DataSource may not be activated correctly in the SAP system.
  Transport Issues: If the DataSource was transported from another system, there may be inconsistencies in the transport.
  Technical Settings: Incorrect technical settings for the DataSource can lead to mapping generation failures.
  Version Mismatch: There may be a version mismatch between the source system and the BW system.
  
  Solutions:
  
  Check DataSource Configuration: Review the DataSource configuration in the SAP BW system. Ensure that all required fields are present and correctly defined.
  Activate the DataSource: If the DataSource is not activated, activate it in the Data Warehousing Workbench (transaction RSA1).
  Recheck Technical Settings: Verify the technical settings of the DataSource to ensure they are correct and complete.
  Check for Missing Fields: Ensure that all fields referenced in the DataSource exist in the source system and are correctly mapped.
  Transport Consistency: If the DataSource was transported, check for any inconsistencies or errors during the transport process.
  Recreate the DataSource: If the issue persists, consider deleting and recreating the DataSource to ensure that it is set up correctly.
  Check Logs: Review the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  Related Information:
  
  Transaction Codes: 
  
  RSA1: Data Warehousing Workbench
  RSA2: DataSource Maintenance
  SLG1: Application Log
  
  
  SAP Notes: Check SAP Notes related to the specific DataSource or error message for any known issues or patches.
  Documentation: Refer to SAP Help documentation for detailed information on DataSource configuration and troubleshooting.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation or to reach out to SAP support for assistance.