The DDS is responsible for developing medical and non-medical evidence to determine
            if the claimant is capable of performing SGA. The DDS should establish a cooperative
            relationship with the claimant early in the adjudicative process to assist in efficient
            case development.
         
         The DDS must:
         
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                     Review all case documentation; 
 
 
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                     Recognize and act to resolve questions and discrepancies in work activity; 
 
 
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                     Obtain relevant evidence from a prior case folder, if indicated. For electronic prior
                        folders, the DDS must copy relevant evidence to the current filing. For more information
                        on determining the need for a prior folder, see DI 20505.010;
                      
 
 
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                     Request medical and other information needed to adjudicate the claim; 
 
 
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                     Make required efforts to get needed evidence; 
 
 
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                     Take additional action to resolve insufficiencies or inconsistencies. For example,
                        request the CE(s), re-contact sources, and ask the claimant or others for additional
                        information; and
                      
 
 
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                     Document all efforts to obtain evidence. For more information on documenting the disability
                        folder, see DI 20503.001E. 
 
 
For more information on who must receive correspondence and notices during case development,
            see DI 26535.042.
         
         IMPORTANT: If the FO does not provide the DFI, DLI, statutory blindness DLI (if applicable),
            POD, an SGA finding, or any other technical information necessary to adjudicate the
            claim, the DDS must obtain the necessary information before adjudicating the claim.
         
         NOTE: Be alert to the possibility the claimant may need assistance, particularly when
            an alleged mental impairment exists.