INTEGRATION_DIRECTORY_HMI: Test failed

Hi! ALL

We have installed PI 7.1 and were going over our check list to make sure installation is complete and system is ready..

However, going over the standard check list we found that the following RFC connection failed:

INTEGRATION_DIRECTORY_HMI : When we clicked test connection; it had the Status Text as "Internal Server Error"

However, our messages are flowing fine thru PI ...

Would like to know where the INTEGRATION_DIRECTORY_HMI is used; as it seems to have an error when tested...but, we haven't seen any problems in terms of message flow through PI.

Please, let us know the purpose/functionality of INTEGRATION_DIRECTORY_HMI and how we can fix this error.

Thank you,

Ritu