---
title: CBAdvertisementDataOverflowServiceUUIDsKey
framework: corebluetooth
role: symbol
role_heading: Global Variable
path: corebluetooth/cbadvertisementdataoverflowserviceuuidskey
---

# CBAdvertisementDataOverflowServiceUUIDsKey

An array of UUIDs found in the overflow area of the advertisement data.

## Declaration

```swift
let CBAdvertisementDataOverflowServiceUUIDsKey: String
```

## Discussion

Discussion The value associated with this key is an array of one or more CBUUID objects, representing CBService UUIDs. Because data stored in this area results from not fitting in the main advertisement, UUIDs listed here are “best effort” and may not always be accurate. For details about the overflow area of advertisement data, see the startAdvertising(_:) method in CBPeripheralManager.

## See Also

### Advertisement Keys

- [CBAdvertisementDataLocalNameKey](corebluetooth/cbadvertisementdatalocalnamekey.md)
- [CBAdvertisementDataManufacturerDataKey](corebluetooth/cbadvertisementdatamanufacturerdatakey.md)
- [CBAdvertisementDataServiceDataKey](corebluetooth/cbadvertisementdataservicedatakey.md)
- [CBAdvertisementDataServiceUUIDsKey](corebluetooth/cbadvertisementdataserviceuuidskey.md)
- [CBAdvertisementDataTxPowerLevelKey](corebluetooth/cbadvertisementdatatxpowerlevelkey.md)
- [CBAdvertisementDataIsConnectable](corebluetooth/cbadvertisementdataisconnectable.md)
- [CBAdvertisementDataSolicitedServiceUUIDsKey](corebluetooth/cbadvertisementdatasolicitedserviceuuidskey.md)