How To Fix IW301 - An equipment must be entered before making an assembly selection

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 301

• Message text: An equipment must be entered before making an assembly selection

What causes this issue?

You want to select an <GL:assembly>assembly</>, but have not entered an
<GL:equipment>equipment</> for this <GL:maintenance_order>maintenance
order</>.

System Response

INCLUDE 'KEINE-FUNKTION' OBJECT DOKU ID TX LANGUAGE E

How to fix this error?

You can proceed in one of the two following ways:
You can continue processing the PM order without entering an assembly.
You can enter an equipment with a <GL:bill_of_material>bill of
material</> as a reference object in the header data screen. If the
bill of material contains one or more assemblies, you can select them.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW301 - An equipment must be entered before making an assembly selection ?

  The SAP error message IW301, which states "An equipment must be entered before making an assembly selection," typically occurs in the context of maintenance or work order processing in the SAP system, particularly when dealing with equipment and assemblies in the Plant Maintenance (PM) module.
  Cause:
  This error arises when you attempt to select an assembly or component for a maintenance order or work order without specifying the equipment to which the assembly is related. The system requires that you first identify the equipment before it can allow you to make any selections related to assemblies or components.
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Enter Equipment Information:
  
  Navigate to the transaction where you are encountering the error (e.g., IW31 for creating a work order).
  Ensure that you have entered the relevant equipment number in the appropriate field. This is usually found in the "Equipment" field of the work order or maintenance order.
  
  
  
  Check Equipment Status:
  
  Verify that the equipment you are entering is active and not in a status that would prevent it from being used in a work order (e.g., it should not be marked as inactive or under maintenance).
  
  
  
  Review Assembly Selection:
  
  Once the equipment is entered correctly, you should be able to proceed with the assembly selection without encountering the error.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to access and modify the equipment and assembly data.
  
  
  
  Consult Documentation:
  
  If you are unsure about the equipment or assembly data, refer to your organization's documentation or SAP help resources for guidance on the correct procedures.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to this error include IW31 (Create Order), IW32 (Change Order), and IW33 (Display Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Training: Ensure that users are trained on the correct processes for entering equipment and selecting assemblies in SAP PM.
  System Configuration: If the issue persists, it may be necessary to consult with your SAP Basis or technical team to check for any configuration issues in the system.
  
  By following these steps, you should be able to resolve the IW301 error and proceed with your maintenance activities in SAP.