SAP Table /IPRO/TDOCUSR - Users that can access the document

Field Key Data Element Type Offset Leng Decimals Check Table Text
MANDT X MANDT CLNT 0 3 0 T000 Client
GUID X GUID CHAR 3 1 0 Globally Unique Identifier
USR X SYUNAME CHAR 19 12 0 User Name
PERMISSION ACTIV_AUTH CHAR 31 2 0 Activity