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Implementing Manufacturing and Materials Management: From Empty Plant to Costed Work Order · Module 5 · Units of Measure and Calendars

What breaks

Lesson 51 of 188 · 2 min

Six cases, and notice how few of them name this module in their symptom. One. "The BOM quantity is out by a factor of a thousand." A conversion. Not a typo. Two. "The work order is scheduled to finish on a public holiday." A calendar exception is missing. Three. "Scheduling stopped working in January." The calendar was not generated far enough forward — predictable a year in advance, and discovered on a Monday morning. Four. "Resource capacity looks half what it should be." The shift pattern is wrong; reported against the resources module, caused here. Five. "Inventory drifts by small amounts every month." Conversion rounding on a high-volume item — the one that takes longest to find, because nothing is wrong with any single transaction: each is correct to its own precision, and the drift is the sum. Six. "We changed a conversion and historical reports changed." Conversions are retroactive

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In this module: Module 5 · Units of Measure and Calendars

  1. 1Why these break things quietly
  2. 2UOM classes and base units
  3. 3Building units and conversions
  4. 4The manufacturing calendar
  5. 5Shifts and workday patterns
  6. 6What breaks
  7. 7Lab: units, conversions and a five-year calendar