# gateway.technical.issuer_offline

> For the complete machine-readable documentation index, see [llms.txt](https://apidocs.chargebee.com/llms.txt).


**gateway**

The card issuer's systems are offline. This happens when the issuing bank's servers are temporarily unavailable due to maintenance, network failures, or high traffic.

## Recommended Customer Message

The transaction cannot be authorized at this time because the card issuer's systems are offline. Please try again later.

## Root Cause[](#root-cause)

-   **Card issuer systems are offline:** The issuing bank's servers are temporarily unavailable, preventing authorization requests from being processed.
-   **Scheduled or unscheduled maintenance:** The issuer is performing system maintenance, causing temporary unavailability.
-   **Network failure:** Connectivity issues or system failures at the issuer's end have taken their services offline.
-   **High traffic or load issues:** Excessive transaction volumes may have caused the issuer's systems to become unresponsive.

## Troubleshooting and Solutions[](#troubleshooting-and-solutions)

-   Advise the customer to retry the transaction later after the issuer's systems are back online.
-   Suggest using an alternative payment method if the transaction is time-sensitive.
-   Monitor gateway status updates or notifications for information on outage resolution.