The inclusion of the FSSC 22000 scheme in the IAF MLA means that IAF MLA signatories recognized for the FSSC 22000 subarea will recognize as equivalent certificates issued by certification bodies accredited by all other signatories of the FSSC 22000 subarea.
The memorandum of understanding between the IAF and FSSC is also attached to the IAF website.
You can read more about recognition on the IAF website.