A communication error occurred in the RFC call for the WWI server &1

What causes this issue?

A communication error occurred when calling the function &v2& in the RFC
call for the WWI server &v1&. The error text is:
&v3&&v4&

System Response

INCLUDE EHS_BD_NO_GENERATION OBJECT DOKU ID TX

How to fix this error?

INCLUDE EHS_NA_ADMIN OBJECT DOKU ID TX
Note 1058521 provides possible remedies for the error that occurred.

Procedure for System Administrators

INCLUDE EHS_BD_CHECK_RFC_CONNECTION OBJECT DOKU ID TX
INCLUDE EHS_BD_FURTHER_INFO_RFC OBJECT DOKU ID TX
Check the Windows event log on the WWI generation server. The event log
may contain other error messages.

Error message extract from SAP system. Copyright SAP SE.