How To Fix /PLMI/PPE_BO028 - You cannot create assembly items with relations to headers of type &1

/PLMI/PPE_BO028 - Overview

• Message type: E = Error

• Message class: /PLMI/PPE_BO -

• Message number: 028

• Message text: You cannot create assembly items with relations to headers of type &1

Self-Explanatory Message

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/PLMI/PPE_BO028 - Details

• The SAP error message /PLMI/PPE_BO028 indicates that you are trying to create assembly items that have relationships with header items of a specific type, which is not allowed in the system. This error typically arises in the context of Product Lifecycle Management (PLM) or Production Planning (PP) when dealing with bill of materials (BOM) or assembly configurations.
  
  Cause:
  The error is caused by attempting to create an assembly item that references a header item of a type that is not permitted. The header type specified in the error message (&1) indicates the specific type of header item that is causing the issue. This could be due to:
  
  Incorrect Item Type: The header item type you are trying to associate with the assembly item is not compatible with assembly items.
  Configuration Settings: There may be configuration settings in the system that restrict certain types of relationships between items.
  Data Integrity Issues: There may be issues with