Top 10 Inventory Mistakes To Avoid

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Top 10 Inventory Mistakes To Avoid

Inventory control is one of the most important financial management tools within MLS 2026.

Poor inventory procedures can result in:

lost profits

excess stock

missing parts

accounting discrepancies

incorrect pricing

unnecessary purchases

poor cash flow

The following are the most common inventory mistakes, and how to avoid them.


1. Manually Adjusting Inventory Instead Of Using Stock Input

One of the most common mistakes is directly changing:

stock quantities

costs

pricing

inside the Inventory Editor instead of processing parts through:

👉 Stock Input

Manual adjustments bypass:

average cost calculations

purchasing history

accounting updates

vendor tracking

inventory statistics

Better Practice

Always receive parts through:

👉 Purchase Orders and Stock Input

whenever possible.


2. Failing To Use Purchase Orders

Phone orders and handwritten notes create:

missing parts

forgotten orders

vendor confusion

duplicate purchases

inaccurate on-order quantities

Better Practice

Use the Purchase Order system consistently so:

orders are tracked

quantities are controlled

pricing history is maintained

backorders are visible


3. Stocking Parts That Do Not Sell

Slow-moving inventory ties up:

cash

shelf space

purchasing power

Many businesses accumulate large quantities of parts that rarely move.

Better Practice

Regularly review:

Holdover Reports

Sales Summaries

Below Minimum Reports

Return or discontinue slow-moving items whenever practical.


4. Allowing Sales Representatives To Control Inventory Decisions

Sales representatives are valuable resources, but their goal is:

👉 selling inventory.

Not every “special purchase” is actually beneficial to your business.

Better Practice

Use:

actual sales history

lost sales data

usage reports

turnover statistics

to determine what should be stocked.


5. Using Inconsistent Part Descriptions

Descriptions such as:

Oil Filter

Oil Filt

OIL FILTER

Oil Filter Large

make searching and reporting difficult.

Better Practice

Develop standardized naming conventions for:

descriptions

manufacturers

type codes

location codes

Consistency dramatically improves:

searches

reports

ordering

employee efficiency


6. Ignoring Location Codes

Without organized locations:

parts become lost

duplicate purchases occur

technicians waste time searching

Better Practice

Assign clear location codes to:

shelves

bins

storage rooms

warehouse areas

Maintain location accuracy whenever inventory is moved.


7. Not Reconciling Physical Inventory

Computer records eventually drift from reality due to:

damaged parts

misplaced inventory

entry errors

theft

unbilled usage

Better Practice

Perform regular:

👉 Stock Balancing

using physical inventory counts.

Small regular reconciliations are much easier than major corrections later.


8. Overriding Pricing Without Understanding Markup Structure

Random manual pricing changes often create:

inconsistent profits

underpriced items

customer pricing confusion

Better Practice

Use:

👉 Pricing Tables

to maintain consistent markup policies across inventory.

Review pricing regularly as vendor costs change.


9. Failing To Process Cores Promptly

Unreturned cores create:

lost credits

unnecessary expense

cluttered storage

accounting confusion

Better Practice

Run:

Outstanding Core Reports

Core To Return Reports

regularly and process returns quickly.


10. Deleting Inventory Records

Deleting parts removes:

sales history

pricing history

vendor information

inventory statistics

Very little storage space is required for inactive records.

Better Practice

Keep inventory history whenever possible.

Instead of deleting parts:

mark them inactive

reduce stocking levels

leave them available for historical reference


Additional Common Problems

Forgetting To Save Changes

Changes are not retained until:

👉 Save

is selected.


Editing Workorders After Posting

Manual edits after posting can affect:

inventory quantities

accounting

reporting accuracy


Ignoring Lost Sales

Repeated lost sales indicate:

👉 possible stocking opportunities.


Leaving Backorders Open Indefinitely

Open backorders create:

incorrect purchasing totals

inaccurate on-order quantities


Not Updating Retail Prices

Vendor costs change constantly.

Failing to update pricing gradually reduces profitability.


Recommended Best Practices

Use Purchase Orders consistently

Receive parts through Stock Input

Reconcile inventory regularly

Maintain organized locations

Standardize descriptions and codes

Use Pricing Tables

Review sales history frequently

Monitor lost sales carefully

Process cores quickly

Preserve historical inventory records

Train all employees on workflow procedures

Audit inventory reports regularly


Recommended Companion Sections

For more detailed procedures, review:

Inventory Editor

Purchase Orders

Stock Input

Pricing Management

Stock Balancing

Core Processing

Returns Processing

Inventory Utilities

Inventory Reports

Non-Stocking Parts

Cross Reference System

Location Assignment

These sections together provide a complete inventory management system within MLS 2026.Enter topic text here.