How To Fix AD258 - Not saved. Generic buffering requires a key field number

AD258 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 258

• Message text: Not saved. Generic buffering requires a key field number

What causes this issue?

During saving, a message was displayed indicating the number of key
fields to be entered. These fields are required for generic buffering.
Since you did not enter these in the pop-up window provided, the data
was not saved.

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?

Specify a number of key fields. To do this, select save again. The
pop-up window will now be displayed again. Alternatively, you can
select pushbutton <PF>Change key field number</> directly and enter a
number there.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD258 - Not saved. Generic buffering requires a key field number ?

  The SAP error message AD258 ("Not saved. Generic buffering requires a key field number") typically occurs when there is an issue related to the buffering of data in the SAP system. This error is often associated with the use of generic buffering for database tables, where the system expects a key field number to be defined but it is missing or incorrectly configured.
  
  Cause:
  
  Missing Key Field: The table or view you are trying to access may not have a defined key field number, which is necessary for generic buffering.
  Incorrect Buffering Settings: The buffering settings for the table may not be properly configured in the Data Dictionary (SE11).
  Data Dictionary Issues: There may be inconsistencies or issues in the Data Dictionary that prevent the system from recognizing the key fields.
  
  
  Solution:
  
  
  Check Table Definition:
  
  Go to transaction SE11 (Data Dictionary).
  Enter the name of the table that is causing the error and check its definition.
  Ensure that the