What's in that Sandbox (UDF)

Opening up a sandbox that was exported after creating a UDF, you should find:

mdssys
persdef
xliffBundles

folders.

In the mdssys folder you will find:

sandbox/active_mdsSandboxMetadata.xml which contains the basic info on the sandbox, including the name you gave it when you created it, and the date and time, which you should have put into the name of the sandbox, like this:

Client_yyyyMMdd_HHmm

In the persdef folder you will find:

oracle/iam/ui/common/model/user/entity/mdssys/cust/site/site/UserEO.xml.xml which contains the definition of the UserEO object.  Grep on "Attribute Name" to get a list of all of the UserEO elements in the sandbox.  Your new ones should be there.

oracle/iam/ui/common/model/user/view/mdssys/cust/site/site/UserVO.xml.xml  which contains the definition of the UserVO object.  Grep on "ViewAttribute Name" to get a list of all of the UserVO elements in the sandbox.  Your new ones should be there.

In the xliffBundles folder you will find oracle/iam/ui/runtime/BizEditorBundle.xlf which contains the ADF mappings for all of the UI components.  Grep on user.entity.userEO to see all of the UserEO elements.  Your new objects should be there.