SAP ABAP Program CNV_20551_MAINTAIN_PDSNR (Sequential PDC message number for deletion) is using

• Class (3)
• Table/Structure Field (21)
• Function Module (4)
• Message Class (2)
• Message Number (2)
• Class Method (3)
• Table (6)

#	Object Type	Object Name	Object Description	Note
1	Class	CL_CNV_00001_ULV_LOGGER	CWB ULV logger implementation
2	Class	CL_CNV_MBT_ULV_LOGGER	ULV Logger
3	Class	CL_CNV_MBT_ULV_MESSAGE	ULV logger message