How To Fix VHUREF018 - Object assignment of HU &1 does not allow changes to the reference

SAP Error Message - Details

• Message type: E = Error

• Message class: VHUREF - Messages for Reserving HUs for Documents

• Message number: 018

• Message text: Object assignment of HU &1 does not allow changes to the reference

What causes this issue?

The handling unit &V1& is assigned to an object that does not allow you
to change or create a reference. Example: The HU already belongs to an
outbound/inbound delivery or an SD shipment.

System Response

The action is terminated.

How to fix this error?

Repeat the action without HU &V1&.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message VHUREF018 - Object assignment of HU &1 does not allow changes to the reference ?

  The SAP error message VHUREF018 indicates that there is an issue with the handling unit (HU) assignment in the system. Specifically, it means that the object assignment of the handling unit (HU) does not allow changes to the reference. This can occur in various scenarios, such as during the processing of goods movements, inventory management, or when trying to reassign handling units.
  Cause:
  
  Locked Handling Unit: The handling unit may be locked due to ongoing processes or transactions that are currently using it.
  Incorrect Status: The handling unit may be in a status that does not allow changes (e.g., it might be in a delivered state).
  Reference Object Restrictions: The reference object (like a delivery, production order, etc.) associated with the handling unit may have restrictions that prevent changes.
  System Configuration: There may be configuration settings in the system that restrict changes to handling units under certain conditions.
  
  Solution:
  
  Check Status: Verify the status of the handling unit. If it is in a status that does not allow changes, you may need to change its status or complete the current process before making changes.
  Unlock Handling Unit: If the handling unit is locked, identify the transaction or process that is using it and complete or release that process.
  Review Reference Object: Check the reference object associated with the handling unit. Ensure that it is in a state that allows for changes. If necessary, consult with your logistics or warehouse management team to understand the restrictions.
  Consult Configuration: If the issue persists, review the configuration settings related to handling units in your SAP system. You may need to consult with your SAP Basis or configuration team to ensure that the settings align with your business processes.
  Use Transaction Codes: Utilize relevant transaction codes (like HU02 for handling unit management) to check the details of the handling unit and make necessary adjustments.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to handling units, such as HU02 (Change Handling Unit), HU03 (Display Handling Unit), and others.
  SAP Notes: Check SAP Notes for any known issues or patches related to handling units and the specific error message.
  Documentation: Review SAP documentation on handling units and their management to understand the processes and restrictions better.
  Support: If the issue cannot be resolved internally, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the VHUREF018 error in your SAP system.