Error "You can only allocate invoices together if their signs differ" when trying to allocate

This support note applies to:

• AO Practice Manager (NZ)
• AO Practice Manager (AU)
• AE Practice Manager (NZ)
• AE Practice Manager (AU)

In Practice Manager you are able to allocate negative and positive invoices together in the situation where you have done a reversal. 

In some instances you may receive the error message "You can only allocate invoices together if their signs differ".

The error message occurs when the invoices have already been fully allocated.

Before reversing any invoice check to make sure they are not partially or fully paid, if so; unallocate the relevant receipt that was applied to the invoice first.