With my experience, when i tried to create new clients in BW4HANA. I see there is no option to create new clients in SCC4. I had to follow the below process to create new clients.
I can only change the default client, but i cannot create new client.
Process to create new clients in BW4HANA
1. Open HANA Studio.
2. Open SQL Console
3. Execute below command with proper user which has authorization rights. I suggest login to HANA Studio using SAPSID user or SAPABAP1 user.
INSERT into SAPABAP1.T000 (MANDT, MTEXT, LOGSYS) VALUES (‘100’, ‘Sandbox Client’, ‘B4HCLNT100’)
Note: Change the schema name, Logical system name and client number as per your requirement.
4. After you execute above command go to SAP and Execute SE11 t-code
5. Provide “T000” in the table input field and Click on Activate.
6. Once It is activated your can see “New Entries” button in SCC4 t-code.