How To Fix CRM_EXT_REF001 - Incorrect parameter transfer when calling up function module '&1'

CRM_EXT_REF001 - Overview

• Message type: E = Error

• Message class: CRM_EXT_REF - Messages for Add. External References Set

• Message number: 001

• Message text: Incorrect parameter transfer when calling up function module '&1'

What causes this issue?

The call of a function module does not contain all the necessary
transfer parameters.

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?

Contact system administration or SAP support.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CRM_EXT_REF001 - Details

• The SAP error message CRM_EXT_REF001, which indicates "Incorrect parameter transfer when calling up function module '&1'," typically arises when there is a mismatch in the parameters being passed to a function module in the SAP system. This can occur in various scenarios, particularly in CRM (Customer Relationship Management) applications.
  Causes:
  
  Parameter Mismatch: The parameters being passed to the function module do not match the expected parameters in terms of type, number, or sequence.
  Data Type Issues: The data types of the parameters may not be compatible (e.g., passing a string where a numeric value is expected).
  Missing Required Parameters: Some required parameters may not be provided when calling the function module.
  Incorrect Function Module: The wrong function module may be called, which does not accept the parameters being passed.
  Custom Code Issues: If there is custom code involved, it may not be correctly handling the parameters.
  
  Solutions:
  
  Check Function Module Definition: Review the definition of the function module