Is there any option to restrict the supplier to send online messages against closed negotiations

Summary:

Is there any option to restrict the supplier to send online messages against closed negotiations in Supplier portal, currently suppliers are able to query the closed Negotiations and sends the online messages.

Content (please ensure you mask any confidential information):

Negotiation is awarded and purchase document is created to the supplier. Negotiation status - Completed, purchasing document created (Unlocked). (28-Oct-2023)

But still supplier able to send online messages against the closed negotiation. (14-Dec-2023)

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

23D

Code Snippet (add any code snippets that support your topic, if applicable):

Attached the Screenshot