How To Fix AD426 - Buffering/compression not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 426

• Message text: Buffering/compression not allowed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AD426 - Buffering/compression not allowed ?

  The SAP error message AD426, which states "Buffering/compression not allowed," typically occurs in the context of database operations, particularly when dealing with database tables that have certain characteristics that prevent buffering or compression. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  
  Table Settings: The error often arises when you attempt to enable buffering or compression on a database table that has specific attributes or settings that do not allow it. For example, if the table is defined as a transparent table but has certain fields or keys that are incompatible with buffering.
  
  
  Database Constraints: Some database constraints or configurations may prevent the use of buffering or compression. This can include foreign key relationships, primary key definitions, or specific data types.
  
  
  SAP Version/Database Type: The version of SAP or the type of database being used (e.g., Oracle, HANA, SQL Server) may have specific limitations regarding buffering and compression.
  
  
  Solutions:
  
  
  Check Table Definition: Review the table definition in the Data Dictionary (SE11) to ensure that the table is set up correctly for buffering. You may need to adjust the buffering settings or remove incompatible fields.
  
  
  Adjust Buffering Settings: If the table is not meant to be buffered, you can disable buffering for that table. This can be done in the Data Dictionary by setting the buffering option to "No buffering."
  
  
  Review Foreign Keys and Indexes: Ensure that there are no foreign key constraints or indexes that would prevent buffering. If necessary, modify these constraints.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for common issues.
  
  
  Database-Specific Settings: If you are using a specific database, consult the documentation for that database to understand any limitations or settings that may affect buffering and compression.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to check the table definitions and settings.
  SAP Notes: Search for SAP Notes related to AD426 for any specific patches or updates that may resolve the issue.
  Performance Considerations: Understand the implications of disabling buffering or compression on performance, as these features are often used to enhance database performance.
  
  By following these steps, you should be able to identify the cause of the AD426 error and implement a suitable solution.