Transport Creation Rules?
When creating a new transport in SE10. What determines whether I say Workbench or Customizing? What determines whether the type is then Repair or Development/correction?
If you change a standard object in SAP a repair request will be created. For example creating an index, working with formulas or requirements etc.
If you create a zprogram or a ztable for example they will be assigned to a development/correction request.
Workbench Vs Customizing
All ABAP work (Repair and Development/Correction) are called Workbench requests where any configuration changes are assigned to Customizing request.
Hope this is helpful.