301 SAP Message of Class IW An equipment must be entered before making an assembly selection

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301(IW) - An equipment must be entered before making an assembly selection

Message number 301 of class IW is used to display message "An equipment must be entered before making an assembly selection" and can be triggered using the following ABAP code:

    MESSAGE W301(IW). "Warning message example
    MESSAGE I301(IW). "Information message example
    MESSAGE E301(IW). "Error message example
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What causes this issue

You want to select an assembly, but have not entered an
equipment for this maintenanceorder.

System Response

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

How to fix

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 bill ofmaterial as a reference object in the header data screen. If thebill of material contains one or more assemblies, you can select them.
Message text extract from SAP system. Copyright SAP SE.

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