How To Fix DT646 - Buffering not permitted for &, but a buffering type was defined


DT646 - Overview

  • Message type: E = Error

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

  • Message number: 646

  • Message text: Buffering not permitted for &, but a buffering type was defined

  • Show details Hide details
  • What causes this issue?

    The technical settings of the table specify that the table should not
    be buffered. A buffering type was entered for the table nevertheless.

    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?

    Correct the technical settings of the table. You may only specify a
    buffering type if the table may be buffered. This is the case if one of
    the options 'Buffering switched on' or 'Buffering allowed but
    switched off' is selected.

    Error message extract from SAP system. Copyright SAP SE.


DT646 - Details

  • The SAP error message DT646 indicates that there is an issue with the buffering settings for a particular database table. Specifically, it means that buffering is not permitted for the specified table, but a buffering type has been defined in the table's technical settings. This can lead to inconsistencies or unexpected behavior in the application.
    
    Cause: Buffering Configuration: The table in question has been configured to use buffering, but the underlying database or the table's definition does not support it. This can happen if: The table is defined as a pooled or cluster table. The table has certain characteristics (like being a transparent table with specific keys) that do not allow buffering. The table is used in a way that does not support buffering (e.g., it is frequently updated). Technical Settings: The technical settings of the table may have been incorrectly configured, leading to a mismatch between the buffering type defined and the actual capabilities of

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