Rent Manager Sync Error - An error has occurred while saving. The bill post date cannot be before the transaction date of any allocated payment/credit.

Cause

The post date set in Beanworks cannot precede the invoice date of the invoice which error'd. 

Resolution

You'll simply need to set the Post Date to a date which is subsequent to that of the invoice date. 

For Rent Manager it's mandatory that the post date is set when exporting every time you export.

Important Notes: You must enable Post Month for each Rent Manager Legal Entity you're using.