How To Fix AD516 - Gen. buffering calls for no. of key fields > 0

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 516

• Message text: Gen. buffering calls for no. of key fields > 0

What causes this issue?

You want to buffer a table generically, but have not entered a number
of key fields > 0, via which generic buffering is to take place.

System Response

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

How to fix this error?

Select a number of key fields > 0. Select <PF>Possible entries</>
on the relevant field to see which entries are valid.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD516 - Gen. buffering calls for no. of key fields > 0 ?

  The SAP error message AD516 ("Gen. buffering calls for no. of key fields > 0") typically occurs in the context of database buffering in SAP systems. This error indicates that there is an issue with the buffering configuration for a particular database table or view, specifically when the number of key fields is greater than zero.
  Cause:
  
  Buffering Configuration: The error usually arises when a table is configured for buffering, but the key fields are not properly defined or there is a mismatch in the buffering settings.
  Data Consistency: If the data in the buffer is inconsistent with the database, it can lead to this error.
  Table Definition: The table might be defined in a way that does not support the current buffering settings.
  
  Solution:
  
  
  Check Buffering Settings:
  
  Go to the Data Dictionary (SE11) and check the buffering settings for the relevant table.
  Ensure that the buffering type is appropriate for the table's usage. If the table is frequently updated, consider using "No Buffering" or "Single Record Buffering".
  
  
  
  Adjust Key Fields:
  
  Verify that the key fields for the table are correctly defined. If there are changes in the key fields, ensure that they are reflected in the buffering settings.
  
  
  
  Rebuild Buffer:
  
  If the buffer is inconsistent, you may need to clear the buffer. This can be done using transaction code SM12 to delete any locks and SM21 to check for system logs that might indicate issues.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes related to buffering issues.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error. There may be specific recommendations or patches available.
  
  
  
  Review Custom Code:
  
  If there is custom code that interacts with the table, review it to ensure it is not causing the issue.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11 (Data Dictionary)
  SE14 (Database Utility)
  SM12 (Lock Entries)
  SM21 (System Log)
  
  
  
  SAP Notes: Always check the SAP Support Portal for any specific notes related to this error message, as they may provide additional context or solutions.
  
  
  Documentation: Review SAP documentation on database buffering and performance tuning to understand best practices and configurations.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support or consult with a technical expert who can analyze the specific system configuration and logs.