Hi,
When we do any customization in system , 1 request no generate through system that need to be transfer from 1 system ( DEV) to another system ( Quality) for further testing through t code SCC1. If urs test is ok in quality system then next task to transfer into Production system that job done by BASIS team, All transport request no of urs SAP user id can be see in SE09 t code.
regards,
Amit Awasthi.