Multipe number range for indonesia tax invoice no.

Hi All,

I have one question to confirm with you all:

Our indonesia office need to print out tax invoice when billing document is created.

The format is TTS.BBB-YY.NNNNNNNN , and only TTS is fixed, the other 13 digits changes.

And we can only get one number range from tax office for almost one month's usage, which means we can not maintain the number range for one whole year in one time.

Question 1:  How to maintain mulitple of number ranges for one year:

I'm thinking if we can maintain different number  in table "V_OFF_NUM_ID"

2014/01/01 – 2014/12/31  900    ID0114  01

2014/01/01 – 2014/12/31  901    ID0114  03

2014/01/01 – 2014/12/31  902    ID0114  04

2014/01/01 – 2014/12/31  903    ID0114  05

2014/01/01 – 2014/12/31  904    ID0114  06 

But the "code 2" is same sometimes, so I have to do so

2014/01/01 – 2014/12/31  900    ID0114  01

2014/01/01 – 2014/12/31  901    ID0114  03

2014/03/28 – 2014/12/31  901    ID0114  04

2014/01/01 – 2014/12/31  903    ID0114  05

2014/01/01 – 2014/12/31  904    ID0114  06 

But if so, I don't know when the billing date is after 2014/03/28, and the number "03" is not used up, system will pick number range of 04 or 03?

Question 2:

The revision billing document after reversal must have the same tax invoice no. with the "original billing" & reversal billing"

The SAP standard use new tax invoice no.

How to realize it?

Question 3:

YY is year and defaulted from billing date?

Thanks and best regards

Cathy