The only requirement is that you should you be using Mendix Modeler version 7.23.5. On the Teamcenter side, there is no version specified since it goes through the SOA API libraries and Core-2015-07-DataManagement should be fine … you can verify all this information for yourself by going to Siemens Documentation page at https://www.plm.automation.siemens.com/global/en/support/docs.html and then searching for ‘Teamcenter Connector for Mendix’ on that page.
I managed to find the Teamcenter services reference here: https://docs.plm.automation.siemens.com/data_services/resources/tc/12/tcrefs/custom/en_US/services_reference/Help.html
The missing 2015-07 package seems to be linked to Teamcenter 11.2 – it may be that I do not have this since I am using version 10.1.6 of Teamcenter.