How To Fix AD584 - Gen. buffering not allowed, therefore no. of key fields must be 0

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 584

• Message text: Gen. buffering not allowed, therefore no. of key fields must be 0

What causes this issue?

Generic buffering of this table is not permitted. The number of key
fields entered in the technical settings for this table is not equal to
0. Defining a number of key fields only makes sense for generic
buffering of the table.
This error might occur because the table has only one key field.
Generic buffering, however, only makes sense for tables with more than
one field in the key.

System Response

An error message is output.

How to fix this error?

Set the number of key fields in the technical settings to 0. In the
Goto menu, select table maintenance with the option <LS>Technical
Settings</>. In the following screen, press <LS>Change No. of Keys</>
and delete the entered number of key fields in the popup. Activate the
technical settings.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD584 - Gen. buffering not allowed, therefore no. of key fields must be 0 ?

  The SAP error message AD584 ("Gen. buffering not allowed, therefore no. of key fields must be 0") typically occurs in the context of database table buffering settings in SAP. This error indicates that the table in question is set up in a way that does not allow general buffering, but there are key fields defined for the table.
  Cause:
  
  Buffering Settings: The table is configured with buffering settings that do not allow general buffering. This can happen if the table is defined with certain characteristics that make it unsuitable for buffering, such as being a transparent table with a high volume of data or frequent changes.
  Key Fields: The error specifically mentions that the number of key fields must be 0, which means that if the table is not allowed to be buffered, it should not have any key fields defined.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Table Buffering Settings:
  
  Go to the Data Dictionary (transaction SE11).
  Enter the name of the table that is causing the error and display its properties.
  Check the buffering settings under the "Technical Settings" tab. If the table is set to "No buffering," you should ensure that it does not have any key fields defined.
  
  
  
  Modify Key Fields:
  
  If the table is indeed set to "No buffering," you may need to remove any key fields that are defined for the table. This can be done by modifying the table structure in SE11.
  Note that removing key fields may have implications for how the table is used in your application, so ensure that this change is appropriate for your use case.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP Basis or ABAP team to understand the implications of changing buffering settings and key fields.
  
  
  
  Transport Changes:
  
  If you make changes to the table structure, ensure that you transport these changes to the appropriate environments (e.g., from development to quality assurance and production).
  
  
  
  Related Information:
  
  Buffering Types: SAP supports different types of buffering (e.g., single record buffering, generic buffering). Understanding these types can help you make informed decisions about how to configure your tables.
  Performance Considerations: Buffering can significantly impact performance, especially for read-heavy applications. However, it can also lead to data consistency issues if not managed properly.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or updates related to this error message.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support or your internal SAP team for further assistance.