Immediate processing was not possible

What causes this issue?

The IDoc is supposed to be immediately transferred to the application
for processing.
An error has occurred as described below:
Immediate IDoc inbound processing should occur using the server group '
&v1&'.
However, starting using this server group results in the exception
Resource_failure.
The following SYST message is displayed:
(sy-msgid/sy-msgno, sy-msgv1, sy-msgv2)
&v2&, &v3&, &V4&

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use the report RBDAPP01 to transfer IDocs to the application.

Procedure for System Administrators

If possible, eliminate the technical problems.

Error message extract from SAP system. Copyright SAP SE.