Finding Duplicate Material

Question

We have found a few different materials with the same BOM.
As we find them, we make one of them obsolete. We probably have quite a few that we don't know about.
Is there a standard SAP report that would give me a list of all materials that contains the same BOM?
CS14 will not work (unless I don't know how to use it)
Thank you

Answer 1

Hopefully you get the answer you are looking for there. If all else fails it should be a very straight forward task to develop a simple report that display BOMs used by multiple materials, provided you have somewhere there with a developer key of course. Describing a  BOM as uniquely identified by BOM Usage (stlan),  Bill of material number (stlnr) and the Alternative BOM  number (stlal) the following code should extract all BOMS in a give plant that are for multiple materials:
REPORT  zbomreport.
TYPES: BEGIN OF tys_boms,
         stlan TYPE  stlan,  "CHAR 1 0 BOM Usage
         stlnr  TYPE stnum,  "CHAR  8  0  Bill of material
         stlal TYPE stalt, " CHAR  2 0 Alternative BOM
        END OF tys_boms.
DATA: gt_boms TYPE TABLE OF tys_boms.
FIELD-SYMBOLS: <gs_bom> TYPE tys_boms.
PARAMETERS pa_werks TYPE werks_d.
START-OF-SELECTION.
   SELECT stlan stlnr stlal INTO TABLE gt_boms
     FROM mast
     WHERE werks = pa_werks
     GROUP BY stlan stlnr stlal
     HAVING COUNT( DISTINCT matnr ) GT 1.
   loop at gt_boms ASSIGNING <gs_bom>.
     WRITE:/ <gs_bom>-stlan, <gs_bom>-stlnr, <gs_bom>-stlal.
   ENDLOOP.
By that way I think I was a bit hasty to say that this situation necessarily represented a data inconsistency thinking it over again I think that materials should be able to share BOMs but like I say I'm not a PP expert but I think the above code should identify your duplicates as described.
Points are appreciated if you feel an answer has been helpful.