# Usage of Third- and Fourth-Party Libraries

## What does the following error message mean : "Stage model module... does not support including OpenHarmony npm packages or modules in FA model. OpenHarmony build tasks will not be executed, and OpenHarmony resources will not be packed."

Applicable to: OpenHarmony SDK 3.2.5.3, stage model of API version 9

The third- and fourth-party libraries are not yet compatible with the stage model of API version 9 and cannot be used.