SAP ABAP Class CL_APC_WS_SYSTEM_MESSAGES (ABAP Push Channel for system messages) is using

• Class (17)
• Data Element (14)
• Table/Structure Field (1)
• Function Module (1)
• Interface (9)
• Class Method (15)
• Table (1)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_AC_MESSAGE_TYPE_PCP	ABAP Channels message type Push Channel Protocol (PCP)
2	Interface	IF_AC_MESSAGE_TYPE_PCP	ABAP Channels message type Push Channel Protocol (PCP)
3	Interface	IF_AMC_CHANNEL_UTILITY	ABAP Messaging Channel utility
4	Interface	IF_AMC_MESSAGE_PRODUCER_PCP	AMC producer for Push Channel Protocol (PCP) messages
5	Interface	IF_AMC_MESSAGE_PRODUCER_PCP	AMC producer for Push Channel Protocol (PCP) messages
6	Interface	IF_APC_WS_BINDING_MANAGER	APC framework: Connection binding manager (do not implement)
7	Interface	IF_APC_WS_BINDING_MANAGER	APC framework: Connection binding manager (do not implement)
8	Interface	IF_MESSAGE	Interface for Accessing Texts from Message Objects
9	Interface	IF_MESSAGE	Interface for Accessing Texts from Message Objects