Scrap % field in Production Bom

santoshmkcet
santoshmkcet Member Posts: 229
edited 2009-07-07 in NAV/Navision Classic Client
Hi,

While entering a value more than 100, in "Scrap %" field in Production Bom, error message occurs "Maximum permitted value is 100".

Scenario: When the input is 100 kg & output is 20 kg. The "known" scrap is 80 kg obviuosly.

So the percentage of scrap in terms of output is 400 % (80 kg / 20 kg * 100)

But cannot enter the value 400 in "Scrap %".

Advice is required on this matter.

Thanks in advance.
Thanks & Regards
Santosh
Where Stones can be transformed to Gold

Comments

  • ssingla
    ssingla Member Posts: 2,973
    Is it a real time scenario or you are testing?
    CA Sandeep Singla
    http://ssdynamics.co.in
  • Snoopy
    Snoopy Member Posts: 43
    The only advice is, go to the table "Production BOM Line", where in the propeerties the maximum value is set to 100. But when you change this, waht will happen?
  • cernst
    cernst Member Posts: 280
    When entering a Production BOM you don't really calculate with more than 100% scrap do you? Then you must really be bad at calculating :D

    When you know know your output and your input then you know the scrap quantity and that is what you post in in a consumption-, output- or production journal.
    _____________________
    NAV Freelance Consultant
  • gerdhuebner
    gerdhuebner Member Posts: 155
    Right from the definition of the scrap factor (see Philip Obal, Glossary of supply chain terminology, e. g.) as "The percentage of raw materials or components included in gross requirements and expected to be lost in the manufacturing process.", it would be right to allow only percentage values between 0 and 100 (since it cannot be more lost than what is available...) - but unfortunately, the planning needs in NAV are calculated with an added percentage of the output (instead of a subtracted percentage referred to the input). This can be seen for example in the function PlanningNeeds in Table 99000829 "Planning Component" (and in several other objects), so in the above example, the "real" scrap factor would be 80 kg from 100 kg, i. e. 80 %, but in order to get NAV calculate the right planning needs, one has to setup a scrap factor of 400 %... - This should of course be corrected in the future.
    New kits on the blog: https://massivedynamicsblog.wordpress.com
  • santoshmkcet
    santoshmkcet Member Posts: 229
    ssingla wrote:
    Is it a real time scenario or you are testing?

    Its real time scenario. We have raw materials in bars of about 10kg

    some products are of .5 kg wt and their shape are in such way that only 10 or 12 pcs can be produced

    so for producing 0.5 kg of 1 pcs, we have to scrap about 0.5 kg

    so about 100% scrap for producing 1 product.

    similarly we have products of 0.1 kg wt & about 20 pcs

    so to produce 0.1 kg of 1 pcs we have to scrap 0.4 kg

    so about 400% scrap....
    Thanks & Regards
    Santosh
    Where Stones can be transformed to Gold
  • santoshmkcet
    santoshmkcet Member Posts: 229
    Snoopy wrote:
    The only advice is, go to the table "Production BOM Line", where in the propeerties the maximum value is set to 100. But when you change this, waht will happen?


    Thank you snoopy =D>
    Thanks & Regards
    Santosh
    Where Stones can be transformed to Gold
  • santoshmkcet
    santoshmkcet Member Posts: 229
    noname wrote:
    When entering a Production BOM you don't really calculate with more than 100% scrap do you? Then you must really be bad at calculating :D

    When you know know your output and your input then you know the scrap quantity and that is what you post in in a consumption-, output- or production journal.


    Dear noname,

    I know my maths very well, but i think you have not faced these scenarios in your career.

    Just look at the scenario that i have explained 2 posts before...
    Thanks & Regards
    Santosh
    Where Stones can be transformed to Gold
  • santoshmkcet
    santoshmkcet Member Posts: 229
    gerdhuebner wrote:
    Right from the definition of the scrap factor (see Philip Obal, Glossary of supply chain terminology, e. g.) as "The percentage of raw materials or components included in gross requirements and expected to be lost in the manufacturing process.", it would be right to allow only percentage values between 0 and 100 (since it cannot be more lost than what is available...) - but unfortunately, the planning needs in NAV are calculated with an added percentage of the output (instead of a subtracted percentage referred to the input). This can be seen for example in the function PlanningNeeds in Table 99000829 "Planning Component" (and in several other objects), so in the above example, the "real" scrap factor would be 80 kg from 100 kg, i. e. 80 %, but in order to get NAV calculate the right planning needs, one has to setup a scrap factor of 400 %... - This should of course be corrected in the future.

    thank you for understanding.
    =D>
    Thanks & Regards
    Santosh
    Where Stones can be transformed to Gold

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