Why won't ArcGIS Pro recognise my UAV camera?

[JustinOdell]

I am attempting to create an orthomosaic in ArcGIS using the Imagery & Orthomapping tools.

When I add my UAV-captured images to a new ortho mapping workspace, I am presented with the following warning errors:

Error: 8004206c: Failures reported while processing specified command item. [101]
Error: 80042019: Chained Error ID: 0X80042019
Error: 80042019: Could not build mosaic dataset item.
Error: 8004103f: Creation of frame camera model failed.

before the whole thing falls over with:

ERROR 999999: Something unexpected caused the tool to fail. Please refer to the error help for potential solutions, or contact Esri Technical Support http://esriurl.com/support.
Failed to execute (AddRastersToMosaicDataset).

What is causing this error? Could the problem  be that ArcGIS Pro does not have my camera model (FC300C) in it's database?

[DanPatterson_Retired]

Compute Camera Model—Data Management toolbox | ArcGIS Desktop 

This thread deals with your 4th error message with some resolution

https://community.esri.com/thread/189935-can-i-build-the-mosaic-for-a-ortho-mapping-workspace-manual... 

and 4 unresolved threads relating to one of your first error messages

Esri Support Search-Results 

[JustinOdell]

Thanks Dan, though so many unresolved threads...

Can this issue be resolved without switching to Drone2Map?

[KoryKramer]

Imagery and Remote Sensing‌