Why should i fill i-824 after i-130 approved? : immigration

I obtained i-797 and it says, “The above petition has been accredited. Nonetheless, you indicated on the petition that the beneficiary intends to use for an immigrant visa overseas at a U.S. Embassy or a U.S. Consulate and also will apply for adjustment of standing in the USA. Since you have got indicated each choices, USCIS has retained the petition. If the beneficiary intends to use for adjustment of standing in the USA, they need to submit a duplicate of this discover, together with a Type I-485, Utility to Register Everlasting Residence or Modify Standing. They’ll receive Type I-485 from the USCIS web site at www.uscis.gov, by contacting the USCIS Nationwide Buyer Service Middle (NCSC) at 1-800-375-5283, or by visiting the native USCIS subject workplace. Submitting handle info may be discovered on the USCIS web site at www.uscis.gov. If the beneficiary decides to use for an immigrant visa outdoors the USA based mostly on this petition, it’s best to file Type I-824, Utility for Motion on an Accredited Utility or Petition, to request that we ship the petition to the U.S. Division of State Nationwide Visa Middle (NVC). The NVC processes all accredited immigrant visa petitions that require consular motion. The NVC additionally determines which consular publish is the suitable consulate to finish visa processing. It can then ahead the accredited petition to that consulate. The NVC will contact the beneficiary of this petition with additional details about immigrant visa processing steps.” I don’t know what to do ? Is my case transferred to nvc or not as a result of I didn’t get a case quantity and bill id but btw I’m outdoors usa