How To Fix GB045 - Possible problems in field-field substitution.

GB045 - Overview

• Message type: E = Error

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

• Message number: 045

• Message text: Possible problems in field-field substitution.

What causes this issue?

You want to substitute a value of <DS:DE.DATATYPE_D>data type</> &V1&
and an internal length &V2& with the value of a field of data type &V3&
and an internal length &V4&. In certain circumstances this could cause
problems:
With varying data types this can lead to termination if the
corresponding ABAP types are not compatible.
If the receiver field is shorter than the sender field, information
could be lost.

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?

If the two data types &V1& and &V3& are different, check the
<DS:ABAP.MOVE>MOVE</> ABAP command with help of the documentation, to
see if the corresponding ABAP types are compatible.
Note that the sender field can only be transferred in the length &V2&
of the reciever field when the data types are equivalent.
INCLUDE ADIC-ABAPTYPE

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB045 - Possible problems in field-field substitution. ?

  The SAP error message GB045, which states "Possible problems in field-field substitution," typically occurs in the context of field substitution in SAP, particularly when dealing with the configuration of document types, field mappings, or data transfer processes. This error indicates that there may be issues with how fields are being substituted or mapped in a particular process.
  Causes:
  
  Incorrect Field Mapping: The fields specified for substitution may not be correctly mapped or may not exist in the context where they are being used.
  Missing Configuration: Required configuration settings for field substitution may be missing or incorrectly set up in the system.
  Data Type Mismatch: The data types of the fields being substituted may not match, leading to conversion issues.
  Authorization Issues: The user may not have the necessary authorizations to perform the substitution.
  Custom Code Issues: If there are custom enhancements or modifications in the system, they may interfere with the standard field substitution logic.
  
  Solutions:
  
  Check Field