Debtor Adjustment form allows duplicate batch numbers

Debtor adjustment form allows duplicate batch numbers which results in more than one adjustment batch being reported on the Debtor Adjustment report.

Steps to replicate in Jiwa Demo

1. Create a new debtor adjustment batch and activate (expected to be batch 002)
2. Open System Numbers Mainteannce and re-set Last Number of DebtorAdjustmentNo to be the previous batch (expected to be batch 001).
3. Create a new debtor adjustment batch and Save.
4. Error - batch number is batch 002 again.