Action items from Third party vendors after Upgrade to PO 7.5

Hi Friends,

We are planning to migrate from SAP PI 7.1 dual stack to PO 7.5 single stack. We have many third party systems where PI is sending/receiving requests. We are thinking to infirm all out third party vendors about this upgrade. What are all the action items from them after the upgrade?

We are using adapters like File, Idoc, Soap, advantco, XI, etc..

Thanks,

Ramakrishna