Can't execute command: "ApplyNavMeshObstacleSchema", it wasn't registered or ambigious

Omniverse Isaac Sim
1

I’m currently developing a navigation system using Isaac Sim (version 2024.1 / 4.0+), and I attempted to programmatically add a NavMesh obstacle to a prim using the following command:

import omni.kit
omni.kit.commands.execute(“ApplyNavMeshObstacleSchema”, prim_path=“/World/MyCube”)

However, it throws the following error at runtime:
[Error] [omni.kit.commands.command] Can’t execute command: “ApplyNavMeshObstacleSchema”, it wasn’t registered or ambiguous.

I checked the command list under Window > Commands, and there is no such command registered. I’ve enabled the following extensions:

“isaacsim.exp.base” = {}
“omni.anim.graph.schema” = {}
“omni.physx.commands” = {}
“omni.anim.navigation.schema” = {}
“omni.anim.navigation.core” = {}
“omni.anim.navigation.recast” = {}
“omni.anim.navigation.ui” = {}
“omni.anim.navigation.bundle” = {}

But this mainly covers baking and querying the NavMesh, not assigning obstacle properties to individual prims.

So I would like to ask:
1. Is ApplyNavMeshObstacleSchema a deprecated or internal-only command?
2. What is the correct way to mark a prim as a NavMesh obstacle via Python script (no GUI)?
3. Should I apply a specific USD schema manually, or is there an alternative command/API to achieve this?

Any guidance would be greatly appreciated. Thanks in advance!

2

To help us investigate this further, could you let us know where you originally found the command ApplyNavMeshObstacleSchema? This will help us determine if it’s a deprecated command, an internal function, or a command from a different version of the documentation or a specific extension.

In the meantime, could you check if Omniverse Extensions API Commands documentation is helpful?

3

Hello!

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The NVIDIA Isaac Sim Forum Team