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Summary:
What is the difference
between "Fixed Lead Time" and "Variable Lead Time?"
Answer1
Fixed Lead Time uses the value from the Item Master (Mfg detail) "Lead Time
Level field," typically a user defined number.
Variable Lead Time calculates the Work Order Start Date using the Field value in
the Item Master "Lead Time per Unit" The lead time rollup program updates this
field based upon the Mfg. routing.
Answer2
In addition, within the routing you can define "fixed or Variable" times per
operation step. This is key, since some operations like "paint Cure time,"
"burn-in" (for electronics) etc. require the same static amount of time
regardless of the quantity. Production time can also be based upon "batch size."
Purchased parts typically use Fixed lead time. Mfg items use Variable in most
cases.
*Questions excerpted from
ITToolBox.com*
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