we would like to upgrade tns 15.7 to 15.9 version do we need license for 15.9 or can we upgrade tms 15.9 with our existing license ?
Btw we are using tmsxe 5.7 for mailbox scheduling so we winll need to upgrade it 5.9 also.
License version normally mention 15.X, means its works(Unless you change the serial No) with any minor releases. You can open a licensing TAC case and take a confirmation. Use below link >> select open a case>> select Software licensing .
The screenshot shared is From TMSXE 5.9 deployment guide, and it Need TMS 15.9.
In addition to what Nithin has mentioned , please follow upgrade guides.
Do check for .NET version for 15.9 version and download it and RUN as Administrator prior to execution TMS 15.9 exe.
If you are using external database, keep username and password handy for connecting to external SQL database.