How To Fix UPF086 - Variable &1 must have the type of a field to be changed

UPF086 - Overview

• Message type: E = Error

• Message class: UPF - Planning Functions

• Message number: 086

• Message text: Variable &1 must have the type of a field to be changed

What causes this issue?

The formula contains a variable declaration in which an invalid type is
used. Only those characteristics are allowed as types which are
contained in the list of fields to be changed of the formula function.

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?

Change the type of the variable to that of a field to be changed. You
can find out which characteristics are possible here from the
presentation in the formula operand: All fields to be changed are
contained in the formula operands

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UPF086 - Variable &1 must have the type of a field to be changed ?

  The SAP error message UPF086 indicates that a variable in your ABAP program or report is being used in a context where it is expected to be a field that can be changed, but it is not defined as such. This typically occurs when you are trying to modify a variable that is not declared as a field or is not of a compatible type.
  
  Cause:
  
  Variable Declaration: The variable in question is declared in a way that does not allow it to be changed. For example, it might be declared as a constant or as a type that does not support modification.
  Data Type Mismatch: The variable may be of a type that is not compatible with the operation you are trying to perform. For instance, if you are trying to assign a value to a variable that is not a field or is a read-only type.
  Context of Use: The variable is