How To Fix SY159 - Internal table & has an incorrect structure

SY159 - Overview

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 159

• Message text: Internal table & has an incorrect structure

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 SY159 - Internal table & has an incorrect structure ?

  The SAP error message SY159, which states "Internal table & has an incorrect structure," typically indicates that there is a mismatch between the expected structure of an internal table and the actual structure defined in the ABAP program. This can occur for several reasons, including changes in the data dictionary, incorrect field definitions, or issues with the way the internal table is being populated or used.
  Causes:
  
  Mismatch in Structure Definition: The internal table may have been defined with a structure that does not match the expected fields or data types.
  Changes in Data Dictionary: If the structure of a database table or view has changed (e.g., fields added, removed, or modified), and the internal table was not updated accordingly, this error can occur.
  Incorrect Field Assignment: When populating the internal table, if the fields being assigned do not match the structure of the internal table, this error can arise.
  Use of Non-Existing Fields: If