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# XtfGetCountofAppUserModelIds

> XtfGetCountofAppUserModelIds

Gets the count of Application User Model IDs (AUMIDs) from a package information object.

## Syntax

```cpp theme={null}
HRESULT XtfGetCountofAppUserModelIds(
         XtfPackageInfo packageInfo,
         UINT32 *countOfAUMIDs
)  
```

### Parameters

*packageInfo*\
Type: XtfPackageInfo

\[in] The pointer to the information object for a package.

*countOfAUMIDs*\
Type: UINT32 \*

\[out] The number of AUMIDs in the package.

### Return value

Type: HRESULT

Returns `S_OK` if successful; otherwise, returns an error code.

## Remarks

Use this function to get the count of AUMIDs available from the information object for a registered package, prior to calling the [XtfGetAumid](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfgetaumid-xtfapi-xbox-windows-m.md) function to get the AUMID at a specific index for that package. A pointer to a package information object is returned by calling either the [XtfRegisterPackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisterpackage-xtfapi-xbox-windows-m.md) or [XtfRegisterNetworkSharePackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisternetworksharepackage-xtfapi-xbox-windows-m.md) function to register a package.

You can also use the [XtfGetPackageFullName](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfgetpackagefullname-xtfapi-xbox-windows-m.md) function to retrieve the full name of a registered package. For more information about packages, see [Packaging](https://docs.xbox.com/build/core-features/common/packaging/gc-packaging-toc.md).

## Requirements

**Header:** xtfapi.h

**Library:** XtfApi.lib

**Supported platforms:** Windows (for XBOX console tools)

## See also

[XTF Transport Errors (NDA topic)](https://docs.xbox.com/tools/tools-console/commandlinetools/xtf-transport-errors.md)\
[XtfRegisterPackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisterpackage-xtfapi-xbox-windows-m.md)\
[XtfRegisterNetworkSharePackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisternetworksharepackage-xtfapi-xbox-windows-m.md)\
[Additional Xtf APIs](https://docs.xbox.com/reference/tools/xtf/xtfapi/atoc-xtfapi.md)


## Related topics

- [XtfGetPackageFullName](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfgetpackagefullname-xtfapi-xbox-windows-m.md)
- [XtfRegisterNetworkSharePackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisternetworksharepackage-xtfapi-xbox-windows-m.md)
- [XtfRegisterPackageOnDrive](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisterpackageondrive-xtfapi-xbox-windows-m.md)
- [XtfRegisterPackage](https://docs.xbox.com/reference/tools/xtf/xtfapi/functions/xtfregisterpackage-xtfapi-xbox-windows-m.md)
- [Additional Xtf APIs (API contents)](https://docs.xbox.com/reference/tools/xtf/xtfapi/atoc-xtfapi.md)