E1 9.1 How do you enter the Bank Account information for Mexican bank in P0030G

Hi --

We need to setup E1 to make A/P payments for our Mexican division.  They are based in Mexico and the company base currency is MXN.  When I set up the bank account information for the G/L account via P0030G, how do I enter the CLABE number?  If I put it in the IBAN field, I get an error.  Do I split the account number up into the routing #, account # and control #?  Is the last digit of the CLABE the control #?  The numbers I have been given are in this format 1234 1234 1234 1234 12.  I