Hi @AP_10343008 ,#
I think your question consist of 2 points:
1,) how to call rest API form unity... so some kind of what rest API client functionality is available in Unity - so possibly here this question should be addressed to to some native Unity community, unity3d documentation pages or others - some example
https://docs.unity.com/ugs/manual/authentication/manual/rest-api .
https://weeklyhow.com/unity-restful-api/
https://medium.com/bina-nusantara-it-division/how-to-fetch-data-from-api-in-unity-99e58820b2d4
so this issue is not related to Vuforia Studio , but it seem that looking in Web by some search engine will provide a lot of information
2.) The second point seems also to be not related to the Vuforia community - REST API call of PDM data - so the question what of PDM data and which REST API should be used? , there are a lot of PDM systems. Depending on this what kind of PDM data should be called you have to point to the correct community area. So if it means a PDM data from Windchill, then please, address you post to Windchill community or CAD customization
In Vuforia the suggested way is to load data is usually from a Thingworx repository folder. So when e.g. your PDM data is loaded to a folder of Thingworx repository e.g by some Windchill service /worker service - in this case you could load the data from there
