Hi,
In SRM, there are attributes that are mandatory. This are:
ACS: Specifies the backend system where the account assignment is checked.
BSA: Defines the transaction type in the respective system for follow-on documents from shopping carts.
CUR: Default currency of the user
ITS_DEST: System URL for access by internal partner
KNT: Available account assignment categories when creating shopping cart or SRM purchase order.
PRCAT: Defines the product categories for which the user has authorization. You define this attribute using tab card Extended attributes.
SYS: Defines the systems to be searched to find purchase orders. This attribute is used to generate worklists for employees that create confirmations or invoices.
WRK: Specifies the plant in the ERP backend system. You define this attribute using tab card Extended attributes.
Hope this information helps you
BR
Emanuel