How To Fix DO437 - Parameter ID not allowed for reference types

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 437

• Message text: Parameter ID not allowed for reference types

What causes this issue?

INCLUDE DDDOC_DTEL_REFTYPE_RESTRIKT OBJECT DOKU ID TX
You assigned a paramter ID to a data element with reference type.

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?

Remove the parameter ID of the data element or define the data type
attributes of the data element by specifying a domain or with direct
type entry (direct entry of the data type, number of places and if
necessary decimal places).

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 DO437 - Parameter ID not allowed for reference types ?

  The SAP error message DO437 ("Parameter ID not allowed for reference types") typically occurs when you are trying to use a parameter ID (also known as a "parameter ID for user-specific settings") with a reference type in a context where it is not applicable. This error is often encountered in ABAP programming or when dealing with user-specific settings in SAP.
  Cause:
  
  Reference Types: The error arises because parameter IDs are designed to work with value types (like simple data types) and not with reference types (like objects or complex data structures).
  Incorrect Usage: You might be trying to assign a parameter ID to a field that is defined as a reference type, which is not allowed in SAP.
  
  Solution:
  
  Check Data Types: Ensure that the field you are trying to assign a parameter ID to is a value type. If it is a reference type, you will need to change your approach.
  Use Value Types: If you need to store user-specific settings, consider using a value type variable instead of a reference type.
  Review Code: Look through your ABAP code to identify where the parameter ID is being set and ensure it is being applied to the correct data type.
  Parameter ID Definition: If you are defining a parameter ID, make sure it is associated with a field that is compatible with parameter IDs.
  
  Related Information:
  
  Parameter IDs: These are used in SAP to store user-specific settings for fields in transactions. They allow users to have personalized defaults for certain fields.
  ABAP Data Types: Familiarize yourself with the different data types in ABAP, especially the distinction between value types (like integers, strings) and reference types (like objects).
  SAP Documentation: Refer to the official SAP documentation for more details on parameter IDs and their usage, as well as best practices for handling user-specific settings.
  
  If you continue to face issues, consider reaching out to your SAP support team or consulting the SAP community for further assistance.