Golden Tax Interface - product and service category code

Hello together,

do anybody know the additional fields for the GTS interface:

1. product and service category code (SPBM)

2. product category version number (SPBMBBH)

We have a request from our subsidiary in China that these fields must be added to the GTS interface as per legal requirement.

But I can not find any information about these fields in the WWW...

Regards

Spiros