0MAT_DOC missing in 2LIS_03_UM

Am presently uploading 2LIS_03_BF into an ODS which has 0CAL_YEAR,0BWCOUNTER,0MAT_DOC and 0MAT_ITM as the key fields. I also want the same ODS to source data from 2LIS_03_UM. However the above keyfields are not there in the 2LIS_03_UM. Other threads(and also note 417703) seem to suggest that the same key figures <i>are</i> available in 2LIS_03_UM. ( The corresponding R3 fields are MBLNR, MJAH & ZEILE). Can anyone suggest how I can create a single ODS sourcing both 2LIS_03_UM and 2LIS_03_BF ?

Am on 3.5 with the SP19.

Thanks in advance.

D