MetadataException: The assembly required for type mapping not found

I have generated schemas using ConsumeAdapterService from oracle database. I just want to insert data into tables that contain user defined types. Hence, the usertype assembly also got generated.I also have specified the below properties.

enableBizTalkCompatibilityMode = True

useSchemaInNameSpace = False

useAmbientTransaction = True

userAssembliesLoadPath=<DLL path>

I have deployed the solution in my development environment and the solution works great and I can insert data into oracle tables.

Now I deploy this solution to another test environment. I have GACed the assemblies and copied to the Biztalk installation folder as well. I have also specified the path in the userAssembliesLoad property and have done all the setup just i did in my local environment.

I receive the below error

Error Description: Microsoft.ServiceModel.Channels.Common.MetadataException: The assembly required for type mapping not found.

The change is the biztalk environment and the Oracle database server. However, i specified all other properties accurately.

I wonder why it works in my local and does not work in test environment.

Please advise if you have any solution