11 M.R.S. §4-203: Effect of instructions

Subject to Article 3‑A concerning conversion of instruments (section 3‑1420) and restrictive indorsements (section 3‑1206) 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.