mrc_sob_type_code in R12

 Hi...  We are doing upgradtion to R12.We know that GL_SET_OF_BOOKS is renamed to GL_LEDGERS and set_of_books_id is now ledger_id.
In one of the 11i report there is 'mrc_sob_type_code' which we are not able to substitue in r12.The nearest resembling columns in GL_LEDGERS
are
GL_LEDGERS:
Name                                        Datatype         Length      Mandatory    Comments
LEDGER_CATEGORY_CODE    VARCHAR2    -30            Yes              Ledger category (PRIMARY, SECONDARY, ALC etc)
ALC_LEDGER_TYPE_CODE      VARCHAR2    -30            Yes              Reporting currency type (NONE, TARGET, SOURCE)

The details of mrc_sob_type_code in 11i is:
GL_SET_OF_BOOKS