MxLoader

I've created an Object Structure to query ASSETUSERCUST and MX Loader pulls the data fine. But when I try to Add or AddChange a new user / asset it returns BMXAA4214E Unknown Error.

Is the only object in the object structure ASSETUSERCUST? In order to add a user/custodian the main object must be ASSET with ASSETUSERCUST as a child object. This is because values are retrieved from the ASSET record assuming that it will be the owner MBO of the ASSETUSERCUST object when creating the ASSETUSERCUST. Even for retrieval purposes, but especially for modification purposes, you almost always want to use the same parent/child objects & relationships that are used in the core UI. This is because our java code will assume certain objects have a specific owner.

You'll want to use an object structure like MXASSET for this purpose. 

I've created an Object Structure to query ASSETUSERCUST and MX Loader pulls the data fine. But when I try to Add or AddChange a new user / asset it returns BMXAA4214E Unknown Error.