See note 3024781: The error is caused because of the automatic activation of GTM in S4HANA. If you do not use GTM it is fine to deactivate it via the customizing path: Tcode WB2B_CUS -> Activate Components -> uncheck the 'Global Trade Management Acti...

See note 2652765:Search for the following roles in transaction PFCG: /SRMSMC/* and assign the appropriate one to the user.If you are using custom roles make sure to set the proper role attribute for /SRMSMC/PFCG_ROLE_ATTRIBUTES under the Personalizat...

Have you found the solution to your question? I have the same problem.