Validating tax number when creating BP
i've implemented BADI BUPA_TAX_UPDATE.
Inside it's method, when creating a partner, I can read BP guid and using FM BUPA_NUMBERS_GET I can retrieve some info on this BP from the buffer.
My requirement is to validate wether or not the tax number has been filled.
The problem is I can't find a FM that would return the tax number info that has been saved in buffer.
Tried a lot of different FM's that read a tax number for a BP, but none of them return the tax number that i've filled right before saving the BP.
Any other approach i should consider?
Thank you in advance for any help.