• write your own application log to be displayed in the Process tab strip for the Logs for a Process in the Process Chain Maintenance, or:
• if you have implemented your own monitor, or
• have implemented a Customizing interface that goes beyond the parameters of a program, or
• want to access preceding chain processes in your program,

You need to have a good knowledge of the ABAP object-orientated language enhancement - ABAP Objects.

• IN the BW system menu, choose Tools ® ABAP Workbench ® Development ® Class Builder

Interface IF_RSPC_*	Description
EXECUTE	Executes the process. This interface is the main interface used to implement your own process type and is the only process chain maintenance interface that is obligatory.
GET_INFO	Transfers the information for a process to the successor.
GET_LOG	Returns the log for a variant and an instance to the process chain maintenance, either as a title and text or as a list of messages
MAINTAIN	Enables process variants to be created and maintained in the process chain maintenance. It also determines the header information for a variant so that it can be displayed in the process chain maintenance.
GET_VARIANT	Provides value help (F4) for variants. You need to implement this interface and/or interface IF_RSPC_MAINTAIN, in order to be able to add process variants to a chain.
GET_DEFAULT_CHAIN	Gives the default chain for a process. You can suggest, for each variant to be scheduled, which additional process it would make sense to schedule before or after the process.
CHECK	Consistency check at scheduling time for the process/chain You can carry out a check to determine: the consistency of a process dependencies on other processes in the same chain and dependencies on other processes in other chains.
GET_STATUS	We recommend you implement this interface for distributed processes. Distributed processes, such as the loading process, are characterized as having different work processes involved in specific tasks. The interface allows you to request the status of the instance in the process chain maintenance(for distributed processes when follow-on events are not sent). Therefore, the system can also recognize terminations even for distributed processes.
CALL_MONITOR	Calls up the process monitor from the log view in the process chain maintenance.
TRANSPORT	Returns TLOGO entry.
CONTEXT_MENU	Adds some functions to the context menu for a process in the process chain maintenance.

• Enter the process type under Settings ® Maintain Process Types (RSPROCESSTYPES view) in process chain maintenance..

• Then choose Edit ® New Entries, allocate the technical name, short and long description for the process type, enter the name of your class for Object Type Name, and choose ABAP-OO Class as the Object Type.
• Determine Possible Events.
• Determine whether the process can be restarted, through which icons (Id) it is represented, whether the variant name is determined internally, and whether an individual mail handling is implemented for the process type.
• Assign the process type to a process category.
• Enter a number for the position where your process type is to be displayed within a process category in process chain maintenance.
• If necessary, assign a documentation type and a docu. object to the process type. The docu object can be called up via F1 in the process chain maintenance overview tree.

• If using the service class CL_RSPC_APPL_LOG, enter your process type as a sub-object to the log object BW_PROCESS.