How To Fix MI_MGMT151 - Installation order is assigned to a device and cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: MI_MGMT - MI: Device Management

• Message number: 151

• Message text: Installation order is assigned to a device and cannot be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MI_MGMT151 - Installation order is assigned to a device and cannot be changed ?

  The SAP error message MI_MGMT151 indicates that an installation order is currently assigned to a device, and as a result, you cannot change the assignment of that device. This typically occurs in the context of managing maintenance or installation orders in SAP Plant Maintenance (PM) or similar modules.
  Cause:
  The error is triggered when you attempt to change the assignment of a device (such as a piece of equipment or a functional location) that is already linked to an installation order. This could happen in scenarios such as:
  
  Trying to reassign a device to a different installation order.
  Attempting to delete or modify the device's assignment while it is still linked to an active order.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Installation Order: Identify the installation order that is currently assigned to the device. You can do this by navigating to the relevant transaction (e.g., IW38 for order management) and searching for the order number.
  
  
  Review Order Status: Ensure that the installation order is not in a status that prevents changes (e.g., "Released" or "In Process"). If necessary, you may need to complete or close the order.
  
  
  Unassign the Device: If you need to change the assignment, you may first need to unassign the device from the installation order. This can typically be done by:
  
  Completing the order if it is finished.
  Deleting the assignment if the order allows it.
  
  
  
  Change Assignment: Once the device is unassigned from the installation order, you should be able to change its assignment without encountering the error.
  
  
  Consult Documentation: If you are unsure about the process or the implications of unassigning a device, consult your organization's SAP documentation or reach out to your SAP support team for guidance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), IW38 (Display Orders), and IL01 (Create Functional Location) for managing installation orders and devices.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or enhancements that could affect your situation.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to installation orders and device assignments, as restrictions may lead to similar errors.
  
  By following these steps, you should be able to resolve the MI_MGMT151 error and manage your installation orders effectively.