SAP ABAP Program LLD01F3V (LINE_HIER_ENQUEUE) is using

• Table/Structure Field (2)
• Function Module (1)
• Message Number (2)
• Table (1)

#	Object Type	Object Name	Object Description	Note
1	Message Number	LD - 019	Line hierarchy is already being processed by user &
2	Message Number	LD - 020	System error occurred when blocking line hierarchy