# STIPs on Mastercard

- Provider: [Marqeta](https://down.guide/marqeta)
- Level: confirmed
- Impact: Partial outage
- lasted 1d 4h
- started 2026-09-24 20:56 UTC
- Payment Processing
- id: DWN-439c215cab
- Official page: https://stspg.io/xmy6v9qtpwww

## Root cause
> Our team is actively investigating the root cause and assessing the full scope of impact.

[Postmortem](https://stspg.io/xmy6v9qtpwww)

## Updates from Marqeta
### 2026-09-24 20:56 UTC: investigating
On Thursday, September 24, 2026, at approximately 13:07 PT (20:07 UTC), Marqeta was notified of an issue causing some transactions approved or declined by network stand-in. Our team is actively investigating the root cause and assessing the full scope of impact.
A follow-up notification with more detail will be sent within 30 minutes.
We appreciate your patience as we work to resolve this as quickly as possible.

### 2026-09-24 21:26 UTC: investigating
The issue affecting card transactions routed to Mastercard network stand-in processing remains ongoing. This may cause some transactions to be approved or declined by network stand-in. Currently Marqeta engineers are engaging Mastercard directly and investigating the elevated stand-in processing rate. We will update you again in 30 minutes.

### 2026-09-24 21:55 UTC: investigating
The issue affecting card transactions routed to Mastercard network stand-in processing remains ongoing. This may cause some transactions to be approved or declined by network stand-in. Currently Marqeta engineers are continuing to engage Mastercard directly to investigate the elevated stand-in processing rate. We will update you again in 30 minutes.

### 2026-09-24 22:23 UTC: investigating
The issue affecting card transactions routed to Mastercard network stand-in processing remains ongoing. This may cause some transactions to be approved or declined by network stand-in. Currently Marqeta engineers are continuing to engage Mastercard directly to investigate the elevated stand-in processing rate. We will update you again in 30 minutes.

### 2026-09-24 23:12 UTC: investigating
The investigation into card transactions routed to Mastercard network stand-in processing is ongoing. This may have cause some transactions to be approved or declined by network stand-in. There is currently no impact, however Marqeta engineers are continuing to engage Mastercard directly to investigate. We will update this space again upon any substantial change in status.

### 2026-09-25 01:18 UTC: monitoring
Transaction volumes have returned to normal levels, and there is currently no customer impact. Mastercard has confirmed a network-side anomaly and their teams are actively investigating the root cause. Marqeta engineers continue to monitor systems closely while awaiting Mastercard's final technical findings before fully resolving the incident.

### 2026-09-26 01:28 UTC: resolved
On Thursday, September 24, 2026, at approximately 13:07 PT (20:07 UTC) Marqeta identified an issue affecting card transactions processed through Mastercard, in which a number of transactions across several Mastercard programs were declined or handled through the network's stand-in processing. Transaction volumes and processing patterns have returned to normal baseline levels, and we conducted a monitoring period to confirm long term stability. Mastercard has acknowledged the anomaly on their network and is continuing to investigate the underlying root cause; Marqeta will incorporate any further findings once Mastercard's analysis is complete. We appreciate your patience throughout this incident.

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