Update GTS Part Classification in background

I'm looking for a way to update Part Classification data programmatically. This is the data on the Classification tab of transaction /sapsll/product_03. Classification data is stored in table /SAPSLL/PRCTSC. I found function module /SAPSLL/PRCTSC_DB_WRITE but it basically just does a direct table update. I'd like to take advantage of the validation behind the Classification screen. Anyone know of a fun开发者_运维百科ction module to do this?

The best solution I found was the class /SAPSLL/CL_PR.