How do I get ALL the info records for a materials plants using an SAP FM?

Question

I need to get all of the info records from the EINE table for a material - all of its sites (plants, we are using SAP retail).
The problem is this:  I call the FM MD_INFORECORDS_READ - here is the code for my call:
CALL FUNCTION 'MD_INFORECORDS_READ'
          EXPORTING
            imatnr               = t_output_data-article <-- the material number
            iliefnr              = lv_eina_key < -- see below on how I get this
          importing
            eeine                =
          TABLES
            exp_eina             = it_eina
            exp_eine             = it_eine
          EXCEPTIONS
            no_eina_record_found = 2
            no_eine_record_found = 3.
lv_eina_key is taken from this call:
SELECT SINGLE altkn INTO lv_vendor_no
        FROM lfb1
        WHERE lifnr = lv_site (plant)
        AND bukrs = t_output_data-company_code.
The probelm is it only returns the first record it finds for each site.  There could be multiple info records, each one based a a different Valid From date for each site.  I need either ALL of the EINE records for each site OR the most current one
I know I am not using ALl of the parms in the FM - but are there  maybe there are other ones should I be using.
Perhaps there is there another FM I should be using - cause I do not have the info record number to pass. 
Thanks.
Scott

Answer 1

Never mind - the FM does work - this was bad data.