How To Fix IW171 - Selection: by general maint.task list w/o assembly reference

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 171

• Message text: Selection: by general maint.task list w/o assembly reference

What causes this issue?

You want to include a <GL:general_maintenance_task_list>general task
list</> in your <GL:maintenance_order>maintenance order</>. The
<GL:bill_of_material>BOM</> of the <GL:reference_object>reference
object</> or the reference object material in the order contains no
<GL:assembly>assemblies</>.

System Response

Once you have started the search, the system looks for general
maintenance task lists that do not refer to an assembly in their header
data.

How to fix this error?

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 IW171 - Selection: by general maint.task list w/o assembly reference ?

  The SAP error message IW171 ("Selection: by general maint. task list w/o assembly reference") typically occurs in the context of maintenance planning and execution within the SAP system, particularly when working with maintenance task lists. This error indicates that the system is unable to find a general maintenance task list that is associated with the specified assembly or equipment.
  Cause:
  
  Missing Assembly Reference: The maintenance task list you are trying to access does not have an associated assembly reference. This can happen if the task list was created without linking it to a specific equipment or functional location.
  Incorrect Selection Criteria: The selection criteria used to retrieve the task list may not match any existing task lists in the system.
  Data Inconsistency: There may be inconsistencies in the data, such as missing or incorrect entries in the task list or equipment master data.
  
  Solution:
  
  
  Check Task List Configuration:
  
  Go to the transaction code IA05 (Display General Maintenance Task List) and verify if the task list exists and is correctly configured.
  Ensure that the task list is linked to the appropriate assembly or equipment.
  
  
  
  Review Selection Criteria:
  
  Double-check the selection criteria you are using to retrieve the task list. Make sure that you are using the correct parameters and that they match the existing task lists.
  
  
  
  Create or Update Task List:
  
  If the task list does not exist or is not linked to the correct assembly, you may need to create a new task list or update the existing one using transaction code IA01 (Create General Maintenance Task List) or IA02 (Change General Maintenance Task List).
  
  
  
  Check Equipment Master Data:
  
  Ensure that the equipment or functional location you are working with is correctly set up in the system. Use transaction code IE03 (Display Equipment) or IL03 (Display Functional Location) to verify the details.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on maintenance task lists and their configuration.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  IA01: Create General Maintenance Task List
  IA02: Change General Maintenance Task List
  IA05: Display General Maintenance Task List
  IE03: Display Equipment
  IL03: Display Functional Location
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to maintenance task lists and error IW171.
  
  
  User Authorization: Ensure that you have the necessary authorizations to access and modify maintenance task lists.
  
  
  By following these steps, you should be able to resolve the IW171 error and successfully work with maintenance task lists in SAP. If the issue persists, consider reaching out to your SAP support team for further assistance.