How To Fix 6A407 - Variable &1 (name &2) cannot be described (customer's namespace)

6A407 - Overview

• Message type: E = Error

• Message class: 6A - Real estate messages rent adjustment

• Message number: 407

• Message text: Variable &1 (name &2) cannot be described (customer's namespace)

What causes this issue?

You have tried to assign a value to variable &V1& (name &V2&), which
means that this variable is used on the left side (assigned value side)
of a formula in the control table for the representative list of rents.

System Response

This variable was not created by SAP. It originates from a
customer-specific enhancement. If it is used on the right side of a
formula, its value is determined by calling the customer-specific
function module (user exit). Since the variable therefore represents a
function call, its value cannot be changed by assigning it a new value.

How to fix this error?

If you have determined the value using the user exit function module
but wish to change it, you can do this through the use of a help
variable which you assign to the variable.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 6A407 - Variable &1 (name &2) cannot be described (customer's namespace) ?

  The SAP error message 6A407 indicates that there is an issue with a variable in a customer's namespace that cannot be described. This typically occurs in the context of ABAP programming or when working with custom developments in SAP.
  
  Cause:
  The error message can arise due to several reasons:
  
  Variable Not Defined: The variable referenced in the error message may not be defined in the program or context where it is being used.
  Namespace Issues: The variable might be in a namespace that is not accessible or is incorrectly referenced.
  Data Dictionary Issues: If the variable is supposed to be a field from a data dictionary object (like a table or structure), it may not exist or may have been deleted or renamed.
  Authorization Issues: There may be authorization restrictions preventing access to the variable in the customer's namespace.
  Incorrect Syntax: There could be a syntax error in the code where the variable is being used.
  
  
  Solution:
  To resolve