Checking Invoice activity for the Past 6 months on a list of Vendors

Hello SAP Gurus ,

I am a newbie in SAP MM , My Client wants me to check a list of Vendors (400+) which do not have any Invoice activity for the past 6 Months , Can anyone tell me how do I look around to check and see the Invoice activity for 400 Vendors at a time. I know there are some tables which can tell me this information. When I checked the web , I got to see teo tables BSIK , BSAK which can give me the Invoice activity for a Vendor. Please tell me If I am looking at the Correct tables , If not please suggest me the correct tables or tcode. Appreciate your help!

Note : I do not have access to MIR4 tcode.

Thanks,

Dev