How To Fix MDC_LOAD126 - Source ID for "&1" (table &2) must be given explicitly

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_LOAD - Load Messages

• Message number: 126

• Message text: Source ID for "&1" (table &2) must be given explicitly

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_LOAD126 - Source ID for "&1" (table &2) must be given explicitly ?

  The SAP error message MDC_LOAD126 indicates that a source ID for a specific table must be provided explicitly during a data load operation. This error typically occurs in the context of SAP's data management and loading processes, particularly when working with the SAP HANA database or SAP BW (Business Warehouse).
  Cause:
  The error arises when the system expects a source ID to be specified for a particular data load operation, but it is either missing or not provided correctly. The source ID is crucial for identifying the source of the data being loaded into the target table.
  Solution:
  To resolve the MDC_LOAD126 error, you can follow these steps:
  
  
  Check the Data Load Configuration:
  
  Ensure that the data load configuration is set up correctly. Verify that the source ID is specified in the data load settings.
  
  
  
  Specify the Source ID:
  
  If the source ID is not provided, you need to explicitly specify it in the data load request. This can usually be done in the data loading transaction or through the relevant data flow configuration.
  
  
  
  Review the Data Source:
  
  Make sure that the data source you are trying to load from is correctly defined and that it includes the necessary source ID.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or help resources for the specific data loading process you are using. This can provide insights into the required parameters and configurations.
  
  
  
  Check for Updates or Patches:
  
  Sometimes, errors can be related to bugs in the software. Ensure that your SAP system is up to date with the latest patches and updates.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above steps, consider reaching out to SAP support for further assistance. They can provide more detailed troubleshooting based on your specific system configuration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to data loading, such as RSA1 for SAP BW or HANA Studio for HANA database management.
  Data Flow Documentation: Review the documentation for the specific data flow or data model you are working with to ensure all required fields are correctly populated.
  
  By following these steps, you should be able to resolve the MDC_LOAD126 error and successfully complete your data load operation.