Scrap % field in Production Bom

santoshmkcet

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.

ssingla

Is it a real time scenario or you are testing?

Snoopy

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

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

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.

gerdhuebner

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.

santoshmkcet

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....

santoshmkcet

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>

santoshmkcet

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

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...

santoshmkcet

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>