What is causing this Error?
This error will appear when the Universal Transaction Gateway (UTG) is in Offline Mode, and a request is attempting to process that requires an active internet connection to be performed.
Generally speaking, only authorization and settlement requests can be performed during Offline Mode.
How do I resolve this Error?
Additional troubleshooting should be done to determine why the property is in offline mode. If it is because you do not have an internet connection, you must contact your internal IT department or ISP. The UTG Offline Mode will cease if communications are available to the UTG again, and thus the error will cease. See UTG Interface Communication Troubleshooting Guide.
If the property recently made changes to their network setup, you may wish to ensure no IP's are being blocked for Shift4 Services. See Shift4 IP Addresses and DNS Names.
Debit transactions cannot be performed during offline mode. The same error will occur with slightly different wording: 9775 Debit Not Supported in Offline Mode.
This error will generally only occur if you have an i7 Server.