3731479 - Preferred Vendor field disabled in Service Order Procurement tab for external service item in SAP S/4HANA

• Vendor details are missing and Preferred Vendor field is greyed out in the item-level Procurement tab in a Service Order using the "External Service item" item category.
• Vendor cannot be entered in the Procurement tab at item level.

• SAP S/4HANA 
• S4CRM: Service Order 

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