SRM transaction data Table

Hello Friends,

Request your help with an issue where I need to locate transaction data stored in SRM.  In our systems, ECC data flows into SRM and my understanding is that transaction data should be stored in SRM. 

Need to find out where the transaction data is store in SRM for product category for field Product category text.

Product category text is stored in text table of 'COMM_CATEGORY' but this is master data table. I'm looking for transaction data table.

Thanks