Проверьте с этими правами
GRANT SELECT, REFERENCES ON CUSTOMER TO PAYUSER;
GRANT SELECT, REFERENCES ON HOUSE TO PAYUSER;
GRANT SELECT, REFERENCES ON STREET TO PAYUSER;
GRANT SELECT ON PAYMENT_DELETED TO PAYUSER; -- этой таблицы может не быть
GRANT SELECT, INSERT ON PAYMENT TO PAYUSER;
GRANT SELECT, INSERT ON PAY_DOC TO PAYUSER;
GRANT EXECUTE ON PROCEDURE ADD_PAYMENT_FROM_EXT_SYSTEMS TO PAYUSER;
GRANT EXECUTE ON PROCEDURE PAYMENT_ADD_FROM_EXT_SYSTEMS TO PAYUSER;
GRANT EXECUTE ON PROCEDURE PAYMENT_EXT_STATE TO PAYUSER;