SAP table LTRCT has 4 primary key fields being MANDT,APPLC,LOCAT,TRNSC.
If you're only analyzing data from a single SAP instance you may omit field MANT in your relationships as it will we the same across the entire dataset. On the other hand, if you're combining data from multiple SAP instances you need to take MANDT into account.
Field
Description
Data Type
Length
Decimals
Checktable
Data Element
MANDT
Client
CLNT
3
0
*
MANDT
APPLC
Application
NUMC
2
0
LMBP_APPLC
00
Task & Resource Management
01
Yard Management
02
VAS
LOCAT
Presentation Profile/Site
CHAR
4
0
LMBP_LOCAT
TRNSC
Logical Transaction Code
CHAR
20
0
LMBP_TRANS
ISTEP
Initial Logical Transaction Step
CHAR
10
0
LMBP_INITIAL_STEP
SGFLG
System-Guided Transaction
CHAR
1
0
LMBP_SG_TRANS
BUNDL
Determines if Transaction Involves (Non)Bundled or All Tasks