# Voxel Map - [FadasError\_e](https://docs.qualcomm.com/doc/80-63309-1/topic/enum_fadas_8h_1a280abf443019bfc722ac1158e5fe1013.html#_CPPv412FadasError_e) FadasVM\_Init(const char \*licenseKey) - Initialize voxel map feature. **WARNING:** Must be called once before any other FastADAS functions except fadasVersion. - Parameters: - **licenseKey** – License key string. - Returns: - [FADAS\_ERROR\_NONE](https://docs.qualcomm.com/doc/80-63309-1/topic/enum_fadas_8h_1a280abf443019bfc722ac1158e5fe1013.html#fadas_8h_1a280abf443019bfc722ac1158e5fe1013aea09a4171f0866f38326d7e5323f2d12) — Success - [FadasError\_e](https://docs.qualcomm.com/doc/80-63309-1/topic/enum_fadas_8h_1a280abf443019bfc722ac1158e5fe1013.html#_CPPv412FadasError_e) FadasVM\_DeInit(void) - De-initialize voxel map feature. **WARNING:** Must be called once after all other FastADAS functions. - Returns: - [FADAS\_ERROR\_NONE](https://docs.qualcomm.com/doc/80-63309-1/topic/enum_fadas_8h_1a280abf443019bfc722ac1158e5fe1013.html#fadas_8h_1a280abf443019bfc722ac1158e5fe1013aea09a4171f0866f38326d7e5323f2d12) — Success Last Published: Sep 30, 2024 [Previous Topic Vector](https://docs.qualcomm.com/bundle/publicresource/80-63309-1/topics/vector.md) [Next Topic FastADAS SDK Interface Specification](https://docs.qualcomm.com/bundle/publicresource/80-63309-1/topics/library_root.md)