How To Fix ME366 - Following mandatory roles missing in partner maintenance: &2

ME366 - Overview

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 366

• Message text: Following mandatory roles missing in partner maintenance: &2

What causes this issue?

In partner schema (partner determination procedure) &V1&, which is
assigned to the purchasing document type, certain partner roles (partner
functions) are marked as mandatory. However, the following roles have
not been maintained in the current document: &V2&.

How to fix this error?

Maintain the missing mandatory roles on the partner screen.
<ZH>Note</>
You can also maintain the missing mandatory roles in the supplier master
record in order not to receive this message again in the future.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME366 - Following mandatory roles missing in partner maintenance: &2 ?

  The SAP error message ME366 indicates that there are mandatory roles missing in the partner maintenance for a specific business partner or vendor. This error typically occurs in the context of purchasing documents, such as purchase orders or contracts, where a vendor or business partner is required to have certain roles assigned to them in order to proceed with the transaction.
  
  Cause:
  The error is caused by the absence of required roles in the partner profile of the vendor or business partner. In SAP, different roles are assigned to business partners to define their functions in various processes. For example, a vendor might need roles such as "Supplier," "Purchasing Organization," or "Accounting" to be able to participate in purchasing activities.
  
  Solution:
  To resolve the ME366 error, you need to ensure that the necessary roles are assigned to the business partner or vendor. Here are the steps to do this:
  
  
  Access the Business Partner Maintenance:
  
  Go to