---
title: maxPublishers
framework: combine
role: symbol
role_heading: Instance Property
path: combine/publishers/flatmap/maxpublishers
---

# maxPublishers

The maximum number of concurrent publisher subscriptions

## Declaration

```swift
let maxPublishers: Subscribers.Demand
```

## See Also

### Inspecting publisher properties

- [upstream](combine/publishers/flatmap/upstream.md)
- [transform](combine/publishers/flatmap/transform.md)