How To Fix DDACT026 - The field & must be a key field

DDACT026 - Overview

• Message type: E = Error

• Message class: DDACT - Messages for Activating Dictionary Objects

• Message number: 026

• Message text: The field & must be a key field

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 DDACT026 - The field & must be a key field ?

  The SAP error message DDACT026, which states "The field & must be a key field," typically occurs in the context of data dictionary objects, particularly when defining or modifying database tables or views in the ABAP Dictionary (SE11). This error indicates that a field that is expected to be a key field is not defined as such.
  
  Cause:
  
  Field Definition: The field in question is not marked as a key field in the table or view definition, but it is required to be a key field for the operation you are trying to perform.
  Data Model Constraints: The data model or business logic may require that certain fields be unique identifiers (key fields) for the records in the table.
  Inconsistent Configuration: There may be inconsistencies in the configuration of the data model, where the field is expected to be a key but is not defined as one.
  
  
  Solution:
  
  
  Check Field Definition:
  
  Go to transaction SE11 (Data Dictionary).
  Open