How To Fix GB044 - Field &1-&2 cannot be substituted by &3-&4

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 044

• Message text: Field &1-&2 cannot be substituted by &3-&4

What causes this issue?

You want to substitute field &V4& from table &V3& for field &V2& in
table &V1&. However, field &V3&-&V4& is not transferred to
substitution, since it does not belong to a Boolean substitution class.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use search help to choose a field that belongs to a Boolean
substitution class.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB044 - Field &1-&2 cannot be substituted by &3-&4 ?

  The SAP error message GB044 ("Field &1-&2 cannot be substituted by &3-&4") typically occurs in the context of substitution rules in the SAP system, particularly in the area of financial accounting or controlling. This error indicates that there is an issue with the substitution logic defined in the system, where the system is unable to replace one field with another as specified in the substitution rules.
  
  Cause:
  
  Incorrect Substitution Rules: The substitution rules may be incorrectly defined, leading to a situation where the system cannot find a valid mapping between the fields.
  Field Compatibility: The fields involved may not be compatible for substitution. For example, they may belong to different data types or contexts.
  Missing Configuration: There may be missing or incomplete configuration in the substitution settings, which prevents the system from executing the substitution as intended.
  Data Issues: The data being processed may not meet the criteria defined in the substitution rules, leading to