SAP ABAP Table GRAC_S_USER_MASTER_MAP (this structure will hold user id and its master user id)
Hierarchy
GRCFND_A (Software Component) GRC Foundation ABAP
   GRC-AC (Application Component) Access Control
     GRAC_ROLE_MANAGEMENT (Package) GRC ERM Support
Basic Data
Table Category INTTAB    Structure 
Structure GRAC_S_USER_MASTER_MAP   Table Relationship Diagram
Short Description this structure will hold user id and its master user id    
Delivery and Maintenance
Pool/cluster      
Delivery Class      
Data Browser/Table View Maintenance     Display/Maintenance Allowed with Restrictions 
Components
     
Field Key Data Element Domain Data
Type
Length Decimal
Places
Short Description Check
table
1 CONNECTOR RFCDEST RFCDEST CHAR 32   0   Logical Destination (Specified in Function Call) *
2 USER_ID GRAC_USER GRAC_USER CHAR 50   0   User ID  
3 MASTER_USER_ID GRAC_USER GRAC_USER CHAR 50   0   User ID  
History
Last changed by/on SAP  20141106 
SAP Release Created in 600