How To Fix DDACT028 - Cannot change function fields (&: type & has length &, not a key field)

SAP Error Message - Details

• Message type: E = Error

• Message class: DDACT - Messages for Activating Dictionary Objects

• Message number: 028

• Message text: Cannot change function fields (&: type & has length &, not a key field)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDACT028 - Cannot change function fields (&: type & has length &, not a key field) ?

  The SAP error message DDACT028 indicates that there is an attempt to change a function field in a way that is not allowed because the field in question is not a key field. This error typically arises in the context of data dictionary objects, such as tables or views, where certain fields are designated as key fields, and others are not.
  
  Cause:
  
  Non-Key Field Modification: The error occurs when you try to modify a non-key field in a way that is not permitted. For example, you might be trying to change the length or type of a field that is not defined as a key field in the data dictionary.
  Data Dictionary Constraints: SAP enforces certain constraints on how fields can be modified, especially in the context of primary keys and foreign keys. Non-key fields have specific rules regarding their modification.
  
  
  Solution:
  
  Check Field Definition: Review the definition of the field in the data dictionary