Adjustment to add tax amount to invoice mistakenly issued without tax

This guide is for WH-6950 where invoice issued in GST period are accidentally
or mistakenly issued without tax portion.

2 Step to add back the tax portion:
1) Create customer debit note using credit memo
2) perform gst adjustment to transfer the tax amount to filling amount

this is an example from the issue
28650 is without gst
So tax amount = 28650 X 6%
=1719

as invoice issued date falls to April and April supposed to be closed
hence the adjustment can be only made on next filling cycle(April onwards)

use gst_contra as gl code, select tax code as OP/OS, and add item

Use same date with credit memo, select output tax as adjustment type

use AJS (adjustment for output tax)

Use back gst_contra gl code to transfer the amount to gst output

you can check at output tax report

when receiving money from customer, you can knock off the CM created just now
it will appear in customer outstanding document

Mind the date for adjustment.

1) If invoice falls beyond active filling cycle period, you should perform the adjustment on current active filling cycle period
2) Otherwise, you might perform adjustment as per document date.