SAP ABAP Class CX_CTS_REQUEST_INVALID_TARGET (Invalid request target) is using

• Class (11)
• Data Element (6)
• Interface (2)
• Message Class (1)
• Message Number (1)
• Class Method (1)
• Table (2)

#	Object Type	Object Name	Object Description	Note
1	Message Number	PU - 639	Target system &1 is not allowed