How To Fix BUAVC521 - The data source &1 cannot be combined with data source &2 (posting data)

SAP Error Message - Details

• Message type: E = Error

• Message class: BUAVC - Generic message class AVC

• Message number: 521

• Message text: The data source &1 cannot be combined with data source &2 (posting data)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BUAVC521 - The data source &1 cannot be combined with data source &2 (posting data) ?

  The SAP error message BUAVC521 indicates that there is an issue with combining two different data sources in a posting operation. This typically occurs in the context of financial postings or when working with various data sources in SAP, such as when trying to post transactions that involve different types of data sources that are not compatible with each other.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Incompatible Data Sources: The two data sources you are trying to combine (e.g., different types of ledgers, accounts, or document types) are not compatible for the operation you are attempting.
  Configuration Issues: There may be configuration settings in the SAP system that prevent the combination of these data sources.
  Posting Logic: The logic defined in the posting rules may not allow for the combination of the specified data sources.
  
  Solution:
  To resolve the BUAVC521 error, you can take the following steps:
  
  
  Check Data Source Compatibility: Review the data sources you are trying to combine. Ensure that they are compatible for the type of posting you are attempting. This may involve checking the configuration of the data sources in the SAP system.
  
  
  Review Configuration Settings: Go to the configuration settings related to the data sources in question. Ensure that they are set up correctly and that there are no restrictions on combining them.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific information about the data sources you are using. This may provide insights into why they cannot be combined.
  
  
  Adjust Posting Logic: If applicable, review the posting logic or rules defined in your SAP system. You may need to modify these rules to allow for the combination of the data sources.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance. They may have additional insights or solutions based on your specific configuration and usage.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help you analyze or adjust the data sources, such as OB52 (for posting periods) or SPRO (for configuration).
  SAP Notes: Check for any SAP Notes related to the error message BUAVC521, as they may provide specific fixes or workarounds.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.