SIMATIC WinCC/SES V7.3 (Sequence Execution System)

[engineer66]

Dear All,
I have a project we were offering WinCC 7 with Batch v7.1 & Audit V7, it was old offer 1 years ago, the client want to proceed in the project I checked & found that the nearest equivalent now is WinCC/SES V7.3 (Sequence Execution System) but I didn't find download link for it , or licenses for it in the yellow desk does anyone have those software's.

I have another question , if we installed WinCC V7.3 & used batch for PCS7 which is V8.1 now will it work ( I mean here with original license) did some one tried that we have done it before using libraries but not with original license.