Delaware Code
Part 2. Collection of Items; Depositary and Collecting Banks
§ 4-203. Effect of instructions.

Subject to Article 3 concerning conversion of instruments (Section 3-420) and restrictive indorsements (Section 3-206), only a collecting bank's transferor can give instructions that affect the bank or constitute notice to it, and a collecting bank is not liable to prior parties for any action taken pursuant to the instructions or in accordance with any agreement with its transferor.