When you are working with trade allowance agreements and funds you will want to make sure the selected customers are common. If you are setting up an agreement and get the message something to the effect the promotional customer is not specified, good change you have extra customers in the agreement that you don’t have in the fund.
Here is a quick overview.
D365 1611 Update5 (7.0.4475.35138)
AX2012 R3 CU11