Ask HN: Have you made a B2B deal with the customer for country's exclusive user?

How would you deal with a large customer asking you for an exclusive deal within a specific country for your B2B SaaS software?

We are a document parsing SaaS startup (bootstrapped, in our 2nd year), approached by a customer for a B2B deal requesting an exclusive user right in their country. The customer is the biggest company in their country with over 20k employees.

Although we dealt in 4 other B2B agreements, this is the first time we are dealing with exclusive country rights. I fear missing out on clauses in the agreement. Hence, I'm requesting the group for help/advice/guidance in this.

A couple of clauses I think are

1. Volume: Monthly volume commitment, so that they don't take advantage of the agreement by not using our service and we locking out to not provide services to their competitors/country

2. Marketing: we can use their brand in our clientele.

Seeking for the inputs from the community. Thanks in advance.