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what is BOM lock and unlock


what does BOM Lock and BOM Unlock means ...

How to check the status ?

How to Lock and Unlock a BOM?

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  • author's profile photo Former Member
    Former Member
    Posted on Feb 06, 2007 at 01:24 PM

    A basic SAP Engineering Change Management Setup

    This are the basic IMG settings in order to used the engineering change management


    x refers to a tick.

    First setup the control data in OS54.

    Revision sections

    Fields :-

    Revision level active x

    Ext. revision level x

    Higher revision level x

    Object Management Record sections

    Fields :-

    Object maintenance x

    Assign alternative date x

    Overide value/assignment date sections

    Fields :-

    Only with leading change mst. x

    Setting the Revision level active is to activate the engineering change management for

    material master. If you do not want the engineering change management for materials,

    remove the tick.

    With a tick in "Higher revision level", the new revision level has to be always higher

    than the old revision.

    Secondly, setup the external number range in OS53.

    If you use the internal number range, then remove the external number range.

    Third, define the status for the change master records in transaction SM30 - V_T419S.

    Change No. Chg Date Chg Dist. Lock Description

    Status Poss

    1 x x ' ' Active

    2 ' ' ' ' ' ' Inactive

    3 ' ' ' ' x Locked

    Fourth, define modification parameters for the BOM in OS27.

    Fields :-

    BOM Validty Maint. x

    EC Management Active x

    History Requirement ' '

    Unit Piece PC

    The rest of the fields are blank.

    If the History Requirement is tick, every time during creation of the BOM, SAP will

    prompt your for an ECN number as is compulsory.

    Lastly, define fields selection for routing in OP5A.

    PP task lists: initial screen -> Change number -> Transaction code -> Tick Req.

    Setting the Transaction code fields Required indicate that you have make the ECN number

    compulsory when changing the routing.

    Finally, do a test by making changes to the Material Master, BOM and Routing.

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  • author's profile photo Former Member
    Former Member
    Posted on Feb 06, 2007 at 01:23 PM


    Lock the BOM means we can not create a Bill of Material for a material.

    To lock --> DEQUEUE_EBOM_LOCK

    To Unlock --> ENQUEUE_EBOM_LOCK

    even you can these function modules also




    To Know the Status of a BOM --> CS_OV_BOM_LIST_OF_FAILED_LOCKS



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