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[CAPL Functions](../../CAPLfunctions.md) » [MOST](../CAPLfunctionsMOSTOverview.md) » mostAsNtfFunctionCheck

# mostAsNtfFunctionCheck

[Valid for](../../../Shared/FeatureAvailability.md): CANoe DE

## Function Syntax

```plaintext
long mostAsNtfFunctionCheck(long deviceID, long fblockID, 
 long instID, long functionID);
```

## Description

Checks whether a notification client (deviceID) is registered in the notification matrix for a function.

## Parameters

* **deviceID**: Address of the notification client
* **fblockID**: Function block ID
* **instID**: Instance ID
* **functionID**: Function ID

## Return Values

* **0**: deviceID is not registered
* **1**: deviceID is registered
* **Other values**: See [error codes](../CAPLfunctionsMOSTErrorCodes.md)

## Example

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[mostAsNtfFunctionListGetSize, mostAsNtfFunctionListGetFunction](CAPLfunctionMOSTAsNTFFunctionListGetSize.md) • [mostAsNtfDeviceIDListGetSize, mostAsNtfDeviceIDListGetDeviceID](CAPLfunctionMOSTAsNTFDeviceIDListGetSize.md)
