How To Fix DT491 - Could not determine structure width of &

DT491 - Overview

• Message type: E = Error

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

• Message number: 491

• Message text: Could not determine structure width of &

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT491 - Could not determine structure width of & ?

  The SAP error message DT491, which states "Could not determine structure width of &," typically occurs when the system is unable to determine the width of a data structure or table. This can happen in various contexts, such as when working with data dictionary objects, ABAP programs, or during data processing tasks.
  Causes:
  
  Missing Data Element or Structure: The structure or data element referenced in the program or transaction may not exist or may not be properly defined in the Data Dictionary.
  Inconsistent Data Dictionary: There may be inconsistencies or issues in the Data Dictionary, such as missing or incomplete definitions.
  Transport Issues: If the object was transported from one system to another, it may not have been transported correctly, leading to missing definitions.
  Authorization Issues: Lack of proper authorizations to access the data structure or its components can also lead to this error.
  Incorrect Program Logic: The ABAP code may be trying to access a