How To Fix FDT_CORE157 - Assigned expression uses &1 which is not in the context

FDT_CORE157 - Overview

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 157

• Message text: Assigned expression uses &1 which is not in the context

What causes this issue?

For the current function, you have assigned a top expression. In the
definition of this expression, data object &v1& is used. However, &v1&
is not included in the function signature and can therefore not be
passed as a context data object to subordinate expressions.

System Response

The function cannot be activated.

How to fix this error?

Make sure that data object &v1& is part of the function signature.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

FDT_CORE157 - Details

• The SAP error message FDT_CORE157 indicates that there is an issue with an assigned expression in a formula or expression context where a variable or field (&1) is being referenced but is not available in the current context. This typically occurs in the context of SAP's Form Data Technology (FDT) or when working with expressions in SAP applications.
  
  Cause:
  
  Variable Not Defined: The variable or field you are trying to use in your expression has not been defined in the current context.
  Scope Issues: The variable may be defined in a different scope or context that is not accessible from where you are trying to use it.
  Typographical Errors: There may be a typo in the variable name, causing the system to not recognize it.
  Context Changes: The context in which the expression is evaluated may have changed, leading to the variable being unavailable.
  
  
  Solution:
  
  Check Variable Definition: Ensure that the variable or field you are trying