Pre-Steps
This step is required because once the source system data is replaced in the target system, i.e  target system will be overwritten by source system data. So, in case we need to retain target system data the Following data have to take backup.

1.Export User Master Using SCC8
2.Please take snapshots of the Following
3.Client settings (SCC4)
4.Logon groups (SMLG)
5.Processing groups (RZ12)
6.AL11, SE03 and SM61
7.Printer details (SPAD)
8.Operation modes (RZ03, RZ04 and SM63)
9.RFCs (SM59)
10.Partner profiles (WE20) and ports (WE21)
11.Logical systems (BD54)
12.Services that are active (SICF)

These screenshots are to be captured because after system refresh, we need to check and maintain the same settings in target system

Note:Using SE01 transaction, create transport request for backing up of AL11, SE03, SMLG(Logon Groups), RZ12(Processing Groups),SM59(RFC’s), SM69, SPAD, SM61, RZ03

Refresh activity (Database restoration)

1)Stop the target sap system and delete the data Files

2)Restore and Recover the Database using Production System backup.

Post Refresh Activities:

1) Disable batch processing (by setting background work processes as 0 at Os level) or rdisp/btctime=0
2) Start sap system and login with sap* user
3) Install SAP license
4) Prevent batch job from running by setting all jobs from released to scheduled (using SM37) 
5) Delete/recreate TMS for target system using SE06
6) Configure SAP transport system (using STMS)
7) Import user master for all clients (which was done as part of pre-refresh steps)
8) Import transports related to AL11, SE03, SMLG, RZ12, SM59, SALE and SM69  backup (which was done as part of pre-refresh steps)
9)  Execute BDLS transaction
10) Remove entries from few listed tables using SE14 transaction
11) Delete old SAP profiles and import new profiles using RZ10 transaction
12) Perform spool consistency check using SP12 transaction
13) Delete old update records using SM13 transaction
14) Delete/Reorganize transaction RFC’s using SM58 transaction
15) Delete batch job logs by executing RSBTCDEL report using SE38 transaction
16) Delete Old spool requests by executing RSPO0041 report using SE38 transaction
17) Create/modify necessary partner profiles using WE20 transaction
18) Modify necessary ports using WE21 transaction
19) Perform mail configuration using SCOT transaction
20) Delete old mail related entries using SOST transaction
21) Execute SGEN transaction or run RSGENINVLAS report (no variant is required) using SE38 transaction
22) Make necessary services active through SICF transaction