When importing a transport request, which steps are executed by a batch job? Note: There are 3 correct answers to this question.

In the role maintenance transaction (PFCG) of an AS ABAP-based SAP system, which step grants the authorizations of a role to a user master record?

In an AS ABAP-based SAP system, a user performs the second dialog step in a dialog transaction.
The dialog work process used in the first dialog step is occupied by a different user. What happens with this second user request?

Using standard transport protocol settings, after importing a transport request, which log file provides the return codes of the individual import steps? (Note: These answers use the following abbreviations: year <YY>, week: <WW>, quarter <Q>, SAP system ID <SID>, and a 5-digit number
<nnnnn>.)