SM58 - use to monitor, check, and edit RFC transactions. Will also show RFC calls status.

&SAP_EDIT -  function macro code can change or edit tables via se16 or while debugging a program where table will be change to edit mode (pencil symbol). 

SE93 - list/maintain sap transaction code, details - program, authorization objects, etc.

Table TSTC via SE16, list all tcodes.

SEARCH_SAP_MENU -  looks for SAP menu path for a transaction code. Just enter the tcode or text or description linked to the transaction.

WE02/WE05 - display idoc list. Also use in editing idoc structure.

To edit, go to Data record section, click pad symbol before the element to be edited.

Then click Data record and Display> Change.

RSNAST00 - perform issuing of output by entering the output type, output application... This is also used when debugging output program. * Use 1 Send with periodically scheduled job, once you repeat the output for debugging the program. Put a break-point in the output program. Then run RSNAST00, enter output type and output application.

NACE- to check outputs

SM50 - process overview. Looks for status of process (jobs, etc). If user name appears in the user column, means that the job is still processing.

SP01 - check for spool file ( ex. delivery, shipment automation)

Enter the user name. This will also show documents created and show error messages.