/SAPSLL/ADRCON and POBJT

Hello,

Can anyone tell me the difference of an entry in /SAPSLLADRCON for a MOBJT of A (Partner Master) where you can have a POBJT of A1 (SAP GTS: Partner Master - Header) or A2 ( SAP GTS: Partner Master - Legal Control).

Thank you in advance .

Regards, Dean