How to handle VAT Settings issue?

Goal: data matches the clients documents (PTU/2303) 

Get information about the following first:

1. When is the effectivity date of the PTU?
2. When was the vat change supposed to be? (from the 2303)
3. What's the original and the new vat settings supposed to be? 
4. Does the POS already have transactions? 

Scenario 1: VAT settings wasn't changed after the release of the PTU

1. If the BIR has already seen the issue and they have a copy of the reading or of any receipt, we can't change this anymore unless instructed by the BIR EXPLICITLY. 
2.  Ask CIRMS backend team to datafix vat type of transactions on or after the effectivity date of the PTU 
3. Only sales after the effectivity date of the PTU should be updated since OR#0001 should start from that date 
4. Fix data and regenerate readings

Scenario 2: VAT type of the client changed while the POS is already officially used but the client failed to inform us when the change happened. 

1. If the BIR has already seen the issue and they have a copy of the reading or of any receipt, we can't change this anymore unless instructed by the BIR EXPLICITLY. 
2. Get the vat change date from the 2303 document
3.  Ask CIRMS backend team to datafix vat type of transactions starting from the vat change date onwards 
4. Only sales after the vat change date should be fixed. 
5. Sales after the PTU effectivity date and before the vat change date should remain as is
6. Fix data and regenerate readings

Scenario 3: vat settings is incorrect but there're no transactions

1. change the vat settings 

 

*IMPORTANT: After fixing the issue, and it's scenario #1 that occured, inform direct head and HD supervisor so that further investigation can be made.