Resending request for document no. &1 not allowed when MSS is &2

What causes this issue?

Conflict with Messaging System Status (MSS)
You have tried to resend one of the following requests:
1) Request to authorize an electronic fiscal document (for example, NF-e
or CT-e)
2) Request to authorize the cancellation of an electronic fiscal
document
3) Request to authorize the skipping of an electronic fiscal document

System Response

The resending of the above requests is not allowed if the receipt of a
previous request is confirmed by the messaging system used.
1) Receipt of a request to authorize a document confirmed by messaging
system -> Messaging system status = 'A'
2) Receipt of a request to cancel a document confirmed by messaging
system -> Messaging system status = 'B'
3) Receipt of a request to skip a document confirmed by messaging system
-> Messaging system status = 'C'
The messaging system status can be checked in the
<DS:TRAN.J1BNFE>Monitor</>.

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?

You need to wait until you receive a response from the tax authorities.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.