MS Dynamics GP Safe Pay module provides the capability you need to transmit a positive pay file to your bank.  What is Safe Pay or Positive Pay?

Positive Pay is a fraud detection program provided by your bank.  Your accounting software will provide a file to the bank that includes check number, account number, issue date, and amount.  This list is compared electronically to the check when it is presented to the bank for payment.  These fields must match exactly or the check will not be paid and and an exception notification will be sent to you and you would instruct the bank to either pay or return the check.

In MS Dynamics GP accounts payable checks, payroll checks, and EFT transactions can be included in Safe Pay transactions that are uploaded to the bank.  Payroll Direct Deposit transactions are not included in Safe Pay transactions since payments submitted via ACH files are not subject to the check clearing mechanisms at the bank.