What are the requirements to successfully sync a payment from Microsoft Dynamics GP to Viewpost?

In order for a particular check to sync successfully from GP to Viewpost, the following parameters must be followed.

1. The payment method in GP must be check.
2. The payment number/check number must be numeric.
3. The check must not be void.
4. The check must be associated with a checkbook that is registered on Viewpost.
5. The checkbook must contain a bank account number and routing number.
6. The check must not have been previously synced.
7. The check amount must be greater than 0.
8. The check date must not be greater than 7 days prior to the current date.