How To Fix GS317 - Do not change the variable type

GS317 - Overview

• Message type: E = Error

• Message class: GS - Sets

• Message number: 317

• Message text: Do not change the variable type

What causes this issue?

When you changed a variable, its variable type was changed. This is
not allowed, since it can lead to errors if the variable is already
used.

System Response

The system does not change the variable.

How to fix this error?

Please do not change the variable type or delete the variable first and
then create it again. You can only delete the variable if it is not
used.

Error message extract from SAP system. Copyright SAP SE.

GS317 - Details

• The SAP error message GS317 ("Do not change the variable type") typically occurs in the context of ABAP programming when there is an attempt to change the data type of a variable that has already been defined. This can happen in various scenarios, such as when modifying a program, function module, or method where the variable's type is expected to remain consistent throughout its usage.
  
  Cause:
  
  Type Mismatch: The variable was initially declared with a specific data type, and later in the code, there is an attempt to assign a value of a different type to it.
  Inconsistent Declarations: If the variable is declared in multiple places (e.g., in different includes or methods) with different types, it can lead to this error.
  Modification of Data Elements: If a data element or domain that a variable is based on is changed in the Data Dictionary, it can lead to inconsistencies in the program.
  
  
  Solution:
  
  Check Variable Declarations: