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Seems like previous mload job did not complete sucessfully leaving behind UV_Customer table. Just try to drop this table and rerun.
From Teradata manual:
3803 Table ’%VSTR’ already exists. Explanation: The user tried to create a table, view, macro, trigger, procedure or function and a table with that name already existed. This error occurs on the CREATE TABLE, VIEW, MACRO, TRIGGER, PROCEDURE or FUNCTION statement. Generated By: RES and OPT modules. For Whom: End User. Remedy: Examine the Teradata SQL statement and verify that the request is correct. Change the statement to specify a different name and resubmit the request.