The Show Cause Notice issued without a valid Document Identification Number (DIN) is prima facie contrary to the binding instructions issued by the Central Board of Indirect Taxes and Customs, which mandate quoting of DIN on all communications including notices. In the absence of DIN, and unless covered by specifically recorded exceptional circumstances subsequently regularised, such notice is procedurally invalid and liable to be treated as non est in law. However, there are certain recent judgment which enumerate that not depicting the DIN on the SCN, can't make it invalid ab-initio.
Without prejudice, under Rule 16A of the Customs and Central Excise Duties Drawback Rules, 2017 read with the Customs Act, 1962, recovery of duty drawback arises only upon failure to realise export proceeds within the prescribed FEMA period. Where export realisation stands duly completed, e-BRCs have been uploaded on the DGFT portal, and shipping bills are closed in EDPMS, there exists no independent statutory mandate requiring separate submission of realisation proof to Customs in the absence of any specific discrepancy or short realisation.
Further it is pertinent to mention that in the month of Sept" 2024, JNCH has issued a public notice to all exporters to submit the BRCs to their online portal " Dristi" - Export Proceeds Monitoring System. https://www.jawaharcustoms.gov.in/pdf/PN-2024/PN-84-2024.pdf . You need to comply with this requirement.