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No matter how you manage your inventory, you
need to avoid these costly pitfalls..... some of
these are not avoided simply by employing
technology.
Science and software is powerful for solid
inventory replenishment, yet not the sole
answer. In our decades of experience we've
found that truly successful companies also make
a commitment to the constant growth and
development of their people, organizations and
processes.
This checklist will help you discover where you
have opportunity and where to attack to assure
maximum profit for your company.
Pitfalls Discovery Checklist
Your 40 Pitfalls Discovery ChecklistHow to use the Pitfalls Document
I. Demand Forecasting
1. Using one single demand forecasting calculation on all items even though each
item has unique characteristics and unique needs.
2. Over-reacting to high demand spikes by moving the forecast and buying up
although the occurrence will probably not continue
3. Not taking lost sales in account when forecasting and only including shipped or
sales information.
4. Allowing inflated demand to increase forecasts/buying when the product is out
of stock and the same customers order multiple times.
5. Not taking seasonal patterns into account, which will lead to out of stocks
during the up season and overstock in the down season.
6. Relying mainly on Period to Date information to develop a forecast and buying
decisions, which might show a very different, trending picture than many periods
of smooth movement with occasional short-term spikes.
7. Not filtering promotional movement, which will inflate the forecast/inventory or
make the buying tool unusable.
8. Not tracking each item s deviation tendencies for the building of safety stocks
and the proper analysis of each item s true profit picture.
9. Not adjusting the demand forecast and other factors properly as sizeable
accounts are gained or lost in the customer mix.
10. Not managing the transition of replacement items to avoid double inventory and
smoothly manage the new items.
II. Lead Time Forecasting
11. Buying with a cushioned Lead Time that describes a worst-case scenario and
keeps just in case inventory dollars unnecessarily.
12. Not actually forecasting a Lead Time from receipt history, but buying with a
static number based on vendor promises or gut feel.
13. Using one Vendor level Lead Time number for all the line s items even though
some items have experienced occasional short ships or other mishaps and
require a unique item Lead Time.
14. Not tracking and utilizing the historical deviation / consistency information of
the item s receipt history for proper safety stock building.
Your 40 Pitfalls Discovery Checklist
A guide for building your Inventory Profit Projection
Lo Med Hi
Level of Strength
Lo = Pitfall is applicable
3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com
15. If forecasting vendor or item Lead times, using one single forecasting calculation
although each item has unique receipt history characteristics.
16. Overreacting to one-time, long lead time spikes and building the inventory up
unnecessarily in reaction.
17. Not filtering promotional, or other special order receipts out of the Lead Time
calculations that could inflate the inventory.
18. Not taking seasonal Lead Time patterns into account when buying.
III. Order Policy Analysis
19. Buying on a fixed-cycle, scheduled basis, which does not allow the ability to
react if needed between orders and can harm service.
20. Padding the inventory with just in case inventory dollars in fear that sales
might be strong between orders, knowing that the fixed cycle schedule does not
allow for reacting in time.
21. Manually creating Vendor Order Cycles without analyzing the costs and true
profit picture of all possible ordering frequencies.
22. Buying on a schedule, and consistently buying before the products are really
needed which builds inflated inventories.
23. If buying to volume, weight or other size constraints or brackets, not matching
the Order Cycle to the forecasted movement of the products.
24. Sub-Optimizing pricing brackets by not analyzing the profit picture of each
optional pricing bracket and choosing the best one.
IV. Service Level and Safety Stock Management
25. Maintaining one time supply of safety stock on all or most items, even though
each item has unique movement and receipt patterns and requires a specific
amount of safety stock.
26. Not recognizing the smooth demand patterns of most high volume items and
thus keeping inflated, unnecessary amounts of inventory on the key items.
27. Not recognizing the very erratic nature of slower moving products and thus not
keeping enough safety stocks on the items to maintain acceptable service levels.
28. Not using the Lead Time and important Lead Time Deviation factors when
calculating safety stock needs.
29. Overreacting to concerns and requests from customers, sales and management
about low service by simply emotionally buying more rather than scientifically
increasing service through precise safety stock calcs.
Lo Med Hi
Level of Strength
Lo = Pitfall is applicable
3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com
30. Creating Service Level objectives only based on ABC type rankings without taking
the profit picture into account.
31. Requesting low in stock service goals on items considered C or D items when they
have extremely strong net profit margins that more than make up for the extra
cost of safety stock.
V. Replenishment
32. Not reviewing each item and each vendor each day to allow the fastest reaction
time and the lost possible inventory levels.
33. Determining the item s component values on the day of buying, although those
values actually determine the important question of when to buy.
VI. Special Order Opportunity Analysis
34. Managing promotional planning and buying as part of the normal replenishment
numbers, which will impact the serviceability of the promo buys, the validity of the
normal replenishment stock status, the replenishment forecast and the overstock
picture.
35. Not treating deal / forward buy opportunities as a scientific, economic decisions
that require a strategy that is followed by the entire company, so that every
possible dollar of profit is realized.
36. Treating discounts and price increases as the same calculation, although they offer
different opportunities
37. Buying too heavily on dating opportunities, not realizing that much of the goods
are being brought in at a time sooner than planned or needed, which reduces the
actual financial benefit.
38. Going directly to the main vendor after replenishment needs are established, rather
than checking a more economic source like an alternate supplier or another
strategic location in the company s network that may have costly overstock to
transfer.
VII. Order Validity Analysis
39. Padding the top item or items with inventory to move an order to meet a size
like a truckload from what was actually needed, which takes the line out of
balance and makes it difficult and costly to place the next order.
40. Rounding order quantities to inefficient multiples by not looking at each item for
more economic rounding multiples based on the volume of each item in each
location.
3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com
Lo Med Hi
Level of Strength
Lo = Pitfall is applicable

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40 Costly Pitfalls in Demand Forecasting and Replenishment Buying

  • 2. No matter how you manage your inventory, you need to avoid these costly pitfalls..... some of these are not avoided simply by employing technology. Science and software is powerful for solid inventory replenishment, yet not the sole answer. In our decades of experience we've found that truly successful companies also make a commitment to the constant growth and development of their people, organizations and processes. This checklist will help you discover where you have opportunity and where to attack to assure maximum profit for your company. Pitfalls Discovery Checklist Your 40 Pitfalls Discovery ChecklistHow to use the Pitfalls Document
  • 3. I. Demand Forecasting 1. Using one single demand forecasting calculation on all items even though each item has unique characteristics and unique needs. 2. Over-reacting to high demand spikes by moving the forecast and buying up although the occurrence will probably not continue 3. Not taking lost sales in account when forecasting and only including shipped or sales information. 4. Allowing inflated demand to increase forecasts/buying when the product is out of stock and the same customers order multiple times. 5. Not taking seasonal patterns into account, which will lead to out of stocks during the up season and overstock in the down season. 6. Relying mainly on Period to Date information to develop a forecast and buying decisions, which might show a very different, trending picture than many periods of smooth movement with occasional short-term spikes. 7. Not filtering promotional movement, which will inflate the forecast/inventory or make the buying tool unusable. 8. Not tracking each item s deviation tendencies for the building of safety stocks and the proper analysis of each item s true profit picture. 9. Not adjusting the demand forecast and other factors properly as sizeable accounts are gained or lost in the customer mix. 10. Not managing the transition of replacement items to avoid double inventory and smoothly manage the new items. II. Lead Time Forecasting 11. Buying with a cushioned Lead Time that describes a worst-case scenario and keeps just in case inventory dollars unnecessarily. 12. Not actually forecasting a Lead Time from receipt history, but buying with a static number based on vendor promises or gut feel. 13. Using one Vendor level Lead Time number for all the line s items even though some items have experienced occasional short ships or other mishaps and require a unique item Lead Time. 14. Not tracking and utilizing the historical deviation / consistency information of the item s receipt history for proper safety stock building. Your 40 Pitfalls Discovery Checklist A guide for building your Inventory Profit Projection Lo Med Hi Level of Strength Lo = Pitfall is applicable 3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com
  • 4. 15. If forecasting vendor or item Lead times, using one single forecasting calculation although each item has unique receipt history characteristics. 16. Overreacting to one-time, long lead time spikes and building the inventory up unnecessarily in reaction. 17. Not filtering promotional, or other special order receipts out of the Lead Time calculations that could inflate the inventory. 18. Not taking seasonal Lead Time patterns into account when buying. III. Order Policy Analysis 19. Buying on a fixed-cycle, scheduled basis, which does not allow the ability to react if needed between orders and can harm service. 20. Padding the inventory with just in case inventory dollars in fear that sales might be strong between orders, knowing that the fixed cycle schedule does not allow for reacting in time. 21. Manually creating Vendor Order Cycles without analyzing the costs and true profit picture of all possible ordering frequencies. 22. Buying on a schedule, and consistently buying before the products are really needed which builds inflated inventories. 23. If buying to volume, weight or other size constraints or brackets, not matching the Order Cycle to the forecasted movement of the products. 24. Sub-Optimizing pricing brackets by not analyzing the profit picture of each optional pricing bracket and choosing the best one. IV. Service Level and Safety Stock Management 25. Maintaining one time supply of safety stock on all or most items, even though each item has unique movement and receipt patterns and requires a specific amount of safety stock. 26. Not recognizing the smooth demand patterns of most high volume items and thus keeping inflated, unnecessary amounts of inventory on the key items. 27. Not recognizing the very erratic nature of slower moving products and thus not keeping enough safety stocks on the items to maintain acceptable service levels. 28. Not using the Lead Time and important Lead Time Deviation factors when calculating safety stock needs. 29. Overreacting to concerns and requests from customers, sales and management about low service by simply emotionally buying more rather than scientifically increasing service through precise safety stock calcs. Lo Med Hi Level of Strength Lo = Pitfall is applicable 3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com
  • 5. 30. Creating Service Level objectives only based on ABC type rankings without taking the profit picture into account. 31. Requesting low in stock service goals on items considered C or D items when they have extremely strong net profit margins that more than make up for the extra cost of safety stock. V. Replenishment 32. Not reviewing each item and each vendor each day to allow the fastest reaction time and the lost possible inventory levels. 33. Determining the item s component values on the day of buying, although those values actually determine the important question of when to buy. VI. Special Order Opportunity Analysis 34. Managing promotional planning and buying as part of the normal replenishment numbers, which will impact the serviceability of the promo buys, the validity of the normal replenishment stock status, the replenishment forecast and the overstock picture. 35. Not treating deal / forward buy opportunities as a scientific, economic decisions that require a strategy that is followed by the entire company, so that every possible dollar of profit is realized. 36. Treating discounts and price increases as the same calculation, although they offer different opportunities 37. Buying too heavily on dating opportunities, not realizing that much of the goods are being brought in at a time sooner than planned or needed, which reduces the actual financial benefit. 38. Going directly to the main vendor after replenishment needs are established, rather than checking a more economic source like an alternate supplier or another strategic location in the company s network that may have costly overstock to transfer. VII. Order Validity Analysis 39. Padding the top item or items with inventory to move an order to meet a size like a truckload from what was actually needed, which takes the line out of balance and makes it difficult and costly to place the next order. 40. Rounding order quantities to inefficient multiples by not looking at each item for more economic rounding multiples based on the volume of each item in each location. 3696 Largent Way, Suite 200 Marietta, Georgia 30064 404-214-0856 www.blueridgeinventory.com Lo Med Hi Level of Strength Lo = Pitfall is applicable