10000477 
Message
In “1099 Amount” column, enter amount less than 0
Diagnosis
In the 1099 Editing window, in the 1099 Amount column, you have attempted to enter a number that is zero or greater for a credit memo payment, but this is not allowed.
Procedure
In the 1099 Editing window, in the 1099 Amount column, in a row for a credit memo payment, enter a number that is less than zero.