Required connection commands for JALE targets and for calling a BAPI

The following adapter commands are required when calling a BAPI and for JALE targets for connection to a SAP system.

-C clnt_num -U usr_id -P pwd

After specifying -C, -U, and -P arguments, you must use one of the following three adapter command groupings, which are required to complete the connection information:

Use these adapter commands to specify the SAP host ID and the SAP system number:
```
-H host_name -S sys_num
```
The Destination (-D) adapter command is required when using the Saprfc.ini file, which contains the default connection information. The value specified with this adapter command is case sensitive.
```
-D dest_key
```
This group of adapter commands is required when using the SAP R/3 load balancing principle:
```
-BAL -H host_name -G grp -S sys_name
```
The Language (-L) adapter command is an optional adapter command that can be used when needed for your particular connection requirements. Depending on the SAP system, this adapter command may be required for connection.
```
-L lang_cd
```