No description in the IPUMS pages is included about the coding of the unharmonized variables making up inctot (br2010a_incgross, br2010a_incjb2gr, and br2010a_incvalue) It appears that 999999 means NIU.
Is there any other special code (eg. for unknown values)?
PS1 : notice br2010a_incgross and br2010a_incjob are exactly the same variables
PS2 : the universe description of the unharmonized income variables in 2010 should also indicate age +10
Thanks for your help.