How To Fix OL305 - Reference type '&' is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 305

• Message text: Reference type '&' is not defined

What causes this issue?

Internal program error:
The function module 'SWC_CONT_EDIT_DEF' was called by another component
incorrectly parameterized.

How to fix this error?

Please report this error to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL305 - Reference type '&' is not defined ?

  The SAP error message OL305, which states "Reference type '&' is not defined," typically occurs in the context of ABAP programming or when working with data dictionary objects. This error indicates that the system is unable to find a reference type that has been specified in your code or configuration.
  Causes:
  
  Undefined Reference Type: The reference type specified in your code does not exist in the system. This could be due to a typo or because the type has not been created or activated.
  Missing Data Element or Structure: If you are trying to reference a data element or structure that has not been defined or is not active, you will encounter this error.
  Namespace Issues: If you are using a custom namespace and the reference type is not properly defined within that namespace, it may lead to this error.
  Transport Issues: If the reference type was recently transported from another system and the transport did not complete successfully, it may not be available in the target system.
  
  Solutions:
  
  Check for Typos: Verify that the reference type name is spelled correctly in your code.
  Define the Reference Type: If the reference type does not exist, you will need to create it in the ABAP Dictionary (SE11) or ensure that it is properly defined in your program.
  Activate Objects: If the reference type exists but is not active, activate it in the ABAP Dictionary.
  Check Transport Requests: If the reference type was supposed to be transported, check the transport logs to ensure it was successfully imported into the target system.
  Namespace Verification: Ensure that you are using the correct namespace if the reference type is defined in a custom namespace.
  Use Data Dictionary Tools: Use transaction SE11 to search for the reference type and confirm its existence and status.
  
  Related Information:
  
  ABAP Dictionary (SE11): This is the primary tool for managing data types, tables, views, and other dictionary objects in SAP.
  ABAP Editor (SE38): You can use this transaction to check your ABAP code for errors and make necessary corrections.
  Transport Management System (STMS): This transaction can help you manage and monitor transport requests and their statuses.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or ABAP development team for further assistance.