Communication structure & changed after creating event &

What causes this issue?

The communication structure &V1& was changed after creating the LIS
inbound interface for event &V2&.
It is possible that fields will still be used in program &V3& that are
no longer available in communication structure &V1&.

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?

Check program &V3& for fields that are no longer contained in
communication structure &V1& and adjust these if necessary.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.