How To Fix DT173 - Field &: Basis type &: Reference only allowed to class &

DT173 - Overview

• Message type: E = Error

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

• Message number: 173

• Message text: Field &: Basis type &: Reference only allowed to class &

Self-Explanatory Message

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DT173 - Details

• The SAP error message DT173 indicates that there is an issue with the data type definition in ABAP (Advanced Business Application Programming). Specifically, it suggests that a field is being defined with a reference to a class type, but the context in which it is being used does not allow for that reference.
  
  Cause:
  The error typically arises in the following scenarios:
  
  Incorrect Data Type Assignment: You are trying to assign a reference type (like a class) to a field that is not defined to hold a reference. This can happen if you are trying to use a class reference in a structure or table where a value type is expected.
  Field Definition Issues: The field in question may be defined in a way that does not support reference types, such as in a database table or a structure that is not designed to hold object references.
  
  
  Solution:
  To resolve the DT173 error, consider the following