Create new contract after deleting the old one in negotiation

Summary:

Dears,

I created a negotiation containing 2 items and awarded each item to a different supplier.

Then i created contract for each awarding, after that i need to change the awarding so i deleted the contracts to create new contract for only one supplier but i cant do that.

Please check the attached image.

Your support is highly appreciated.

Best Regards,

Content (please ensure you mask any confidential information):

Content (please ensure you mask any confidential information):

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

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