The Comptroller has a specific form — Form 50-830: Notice of Arbitration Withdrawal — for this purpose. You must complete the "Claimant" and "Respondent" portions on the front of a Submission Agreement.In the blank spaces provided for the claimants' names, you. A quick pop-up window will appear on top stating that the case was withdrawn successfully. An attorney may withdraw from representing a party only upon written motion for good cause shown. The following forms are available for downloading, printing and completing. A party may request arbitration after 20 days from the date an out-of-network provider receives the initial payment for a health benefit claim.