Symptom
You are trying to set the field "Product Category" in Shopping Cart as Mandatory but you cannot find any option from the ser interface.
Environment
SAP Business ByDesign
Reproducing the Issue
>>Work Center Home
>>Self-Services Overview
>>Select Go Shopping Advanced
>>In Step 3 (Edit Shopping Cart), the field "Product Category" cannot be set as Mandatory, either through Adaptation Mode or Personalization Mode.
Cause
The "Product Category" field cannot be made mandatory via Adaptation Mode or Personalization Mode as it is bound to above table (KBA 2372377 > point 7).
2372377 - Limitations of HTML5 UI in SAP Business ByDesign
https://userapps.support.sap.com/sap/support/knowledge/en/2372377
Resolution
Please contact you add on partner in order to set the field "Product Category" mandatory through PDI solution.
Keywords
"Shopping Cart"; "Product category"; "Mandatory"; "Adaptation/Personalization Mode" , KBA , AP-POP-PO , Purchase Order , How To