VARSTCURMO in Indian scenario

Hi Gurus,

I wanted to know what period the Opertation VARSTCURMO takes if I give VARSTCURMO = 10 (January or October) in Indian scenario.

As the financial year starts from April to March, April being the first period, 10th period should be January.

Please let me know from which table the operation pick the period number. I think it reads from T549Q.

Please help.

Thanks

Syed