Sending IDoc from SAP to MuleSoft

Hi Experts,

I have to send out the IDoc from SAP to SFDC using MuleSoft as middleware for change in subscription data txcode JK02.

For this I have created a custom Idoc type & messages & will trigger the IDoc using FM ''MASTER_IDOC_DISTRIBUTE''.

I have create an ABAP connection in SM59 but the only problem is that the connection between SAP & MuleSoft is not happening. I believe there might be some more steps in SAP that needs to be done other than just simply adding IP address in SM59.

Below is the error message I am receiving while testing SM59 connection.

sap-mulesoft.png

Please help me with the steps required in SAP & MuleSoft to establish a connection and sending out the IDoc. I tried a lot to find the similar post on SCN, but no luck.