(a) Assignee's rights subject to terms, claims, and defenses; exceptions. Unless an account debtor has made an enforceable agreement not to assert defenses or claims, and subject to subsections (b) through (e), the rights of an assignee are subject to:

1. (1) all terms of the agreement between the account debtor and assignor and any defense or claim in recoupment arising from the transaction that gave rise to the contract; and
2. (2) any other defense or claim of the account debtor against the assignor which accrues before the account debtor receives a notification of the assignment authenticated by the assignor or the assignee.