How To Fix DT647 - Buffering activated for &: specify buffering type

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 647

• Message text: Buffering activated for &: specify buffering type

What causes this issue?

The technical settings of the table specify that it should be buffered.
In such cases, the setting of the buffering type defines how the table
should be buffered (single record, generic or full buffering).

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?

Enter the buffering mode in the technical settings for the table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT647 - Buffering activated for &: specify buffering type ?

  The SAP error message DT647 ("Buffering activated for &: specify buffering type") typically occurs when you are trying to activate or modify a table that has buffering enabled, but the buffering type has not been specified. This can happen during the creation or modification of database tables in the Data Dictionary (SE11).
  Cause:
  
  Buffering Not Specified: The error indicates that the table you are working with has buffering activated, but the specific type of buffering (e.g., single record buffering, full buffering, or no buffering) has not been defined.
  Table Configuration: The table may have been set up in a way that requires you to explicitly define how the data should be buffered in the SAP system.
  
  Solution:
  To resolve this error, you need to specify the buffering type for the table. Here are the steps to do this:
  
  Go to Transaction SE11: Open the Data Dictionary in SAP.
  Select the Table: Enter the name of the table that is causing the error and click on "Display" or "Change".
  Go to Technical Settings: Click on the "Technical Settings" button (or tab).
  Specify Buffering Type: In the buffering section, you will see options for buffering. You need to select one of the following:
  
  No Buffering: If you do not want to buffer the table.
  Full Buffering: If you want to buffer all records of the table.
  Single Record Buffering: If you want to buffer individual records.
  
  
  Save Changes: After selecting the appropriate buffering type, save your changes.
  Activate the Table: Try to activate the table again.
  
  Related Information:
  
  
  Buffering Types:
  
  No Buffering: Data is read directly from the database every time.
  Full Buffering: All records are loaded into the buffer, which can improve performance for read-heavy tables.
  Single Record Buffering: Only individual records are loaded into the buffer, which is useful for tables with a large number of records but infrequent access.
  
  
  
  Performance Considerations: Choosing the right buffering type is crucial for performance. Full buffering can speed up read operations but may consume more memory, while no buffering can lead to slower read times.
  
  
  Documentation: For more detailed information, refer to the SAP Help Portal or the specific documentation related to Data Dictionary and buffering in SAP.
  
  
  By following these steps and understanding the implications of each buffering type, you should be able to resolve the DT647 error and successfully activate your table.