Why is my amount due negative or different than expected?

Check these, in order:

1. Retainage changed. If the project's retainage % changed (or a job was imported with less retainage held), this pay app recalculates retainage on everything billed, which can reduce or flip the amount due.
2. Previous billing. Line 7 (less previous certificates) comes from the last pay app's line 6. If last month was finalized with a mistake, unlock it, fix it, and finalize again.
3. A line went backwards. A lower cumulative percent than last month bills a negative amount for that line. Raise it back or use a change order.
4. Stored materials moved. Lowering stored materials without raising the percent complete reduces the total.
5. Change orders. An approved deductive change order lowers the contract, but not what's already billed.

Still stuck? Ask the help assistant on the pay app. It can see that pay app's numbers and explain them.