You can't add a party to a base contract, not related to anu supplier

Summary:

Created procurement contract from RFQ

at the time of submitting the procurement contract is getting below error

(in the parties "supplier " was not added.) I added and submitted the Proc contract

You can't add a party to a base contract because it holds the general terms of a negotiation and it's not related to any supplier. (OKC-196750)

Content (please ensure you mask any confidential information):

error Message -

You can't add a party to a base contract because it holds the general terms of a negotiation and it's not related to any supplier. (OKC-196750)

Version (include the version you are using, if applicable):