RSA nahi hai. All the Shatabdis based out of CDO - NDLS are operated with the pool of rakes based out of CDO - NDLS. There might be a possibility that today's rake which is being operated as 12011/12, might be given to tomorrow's 12003/04 as well.
Important Note:This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks. Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.