Review the application information and any evidence submitted therewith to be sure
            of the correctness of the prior favorable determination. If there is a question about
            the correctness of the determination, consider reopening the case in accordance with
            the procedures in DI 27501.000. If a continuing disability issue is raised, process the case in accordance with
            the continuing disability procedures in DI 40500.000. In a case where a freeze had been established for a statutorily blind individual
            who has been denied DIB, an SSA-833-U5 determination is required on the issue of whether
            the individual is able to engage in SGA for cash benefit purposes. (Refer to DI 40120.015B.1. for the instruction for handling this type of case.) If the duplicate application
            was filed prior to the release of an allowance notice but received after release, no acknowledgment
            of this duplicate application will be necessary, unless an issue of reopening or continuing
            disability is raised. If the application was filed after release of the favorable notice and no issue of reopening or continuing disability
            investigation is raised, in the ODO/DRS type notification case, send a letter to the
            applicant acknowledging the duplicate application (see DI 40120.015C.1.). Route the folder by SSA-559 to DBS.
         
         In a PC-type notification case, route the file by SSA-559 to a CA or to the appropriate
            PC depending on the type of case involved, e.g., DIB or CDB claim based on an RSI
            NH. On this SSA-559, indicate that no change in the disability determination is necessary
            and request that the duplicate application be acknowledged.
         
         If the duplicate application was filed by a party other than the claimant, institution,
            etc., who had filed the prior application, follow the same procedure as indicated
            above for notifying the secondary applicant (see DI 40120.015C.).
         
         Where an auxiliary applicant files a duplicate application on behalf of a NH and also
            files an auxiliary application on behalf of self and others, and the primary claim
            has been or is being denied, use the language in DI 40120.015C.3. for preparing the notice.