Hi Vepada, 

To get the registration number of ap emcet you should follow these steps:

1. Open AP EAMCET Portal and Click on Forgot Registration Number Link.
2. Enter Transaction ID:a).In Case of Payment is through Credit Card /Debit Card, enter the Reference ID; b). AP Online /TS Online /Through Payment Gateway has to enter the Transaction ID

1. Enter 'Qualifying Exam Hall Ticket No.' and 'SSC Hall Ticket No.'
2. Click 'Submit' button.
3. AP EAMCET 2019 Registration Number will be Displayed on Screen.