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Course 189 · Work course 59

Trace Product Lots and Rehearse a Recall

Build a fictional stationery-lot traceability map with component/batch/customer links, affected and unaffected quantities, hold notices, response counts and a recall tabletop review.

Before you start

Paper or a local document and a basic calculator are enough; all required records are supplied.

Inventory and Order Operations See everything you’ll need

Free download · Original practice data · No external account required. Download the starter pack

What you’ll leave with

A fictional stationery-lot traceability map with component/batch/customer links, affected and unaffected quantities, hold notices, response counts and a recall tabletop review.

Start course Start without an account. Sign in to save lesson progress across devices.

Your project

Start with the practice files. Build your project one lesson at a time.

Practice files are free without an account. Sign in to save your project record in My Proof: a description, checklist, and optional work link. Keep the original files in your own app or notebook; saving a project record does not upload them.

  1. Get your materialsDownload practice filesSupplied practice cases, a blank working record, complete lesson instructions, and annotated worked examples.
  2. Make your projectView the project checklist Work in your own notebook, document, or software. Use the supplied practice examples when you prefer.
  3. Keep a private recordSave a project record Sign in to save a description and checklist, then return to update them.
Course handbook

Know the route before you begin.

Here’s what you’ll need and what you’ll make. You can return to this guide during any lesson.

Who this is for

Learners ages 14+ exploring work and adults preparing for an entry-level or next-stage responsibility. Work eligibility, supervision and occupational requirements remain separate.

Prepare before lesson one
  • Paper or a local document and a basic calculator are enough; all required records are supplied.
  • Recommended preparation: Inventory and Order Operations. Use fictional information throughout.
Your final project

Finish with proof you can use.

A fictional stationery-lot traceability map with component/batch/customer links, affected and unaffected quantities, hold notices, response counts and a recall tabletop review.

Save a project record in My Proof
See project checklist and review criteria

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Save the genealogy and scope question for the authorized lead; include the original-case decision evidence and a separate changed-case result.
  • Save a 60-unit scope reconciliation with custody and recipient IDs; include the original-case decision evidence and a separate changed-case result.
  • Save the movement hold and evidence gap register; include the original-case decision evidence and a separate changed-case result.
  • Save three unsent notices plus their shipment-source links; include the original-case decision evidence and a separate changed-case result.
  • Save distinct communication and custody measures with gaps; include the original-case decision evidence and a separate changed-case result.
  • Assemble the mock trace packet with bounded learning claim; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
Three ideas to help you along the way
Three useful ideas

The rules behind the steps.

01

Match the task-specific constraint

Genealogy links component lots to each finished batch; a common product name does not identify which units share an input.

02

Keep decisions traceable

Preserve the original records and identify which person or policy can authorize a change; a plausible assumption is not approval.

03

Test the handoff

A mock recall report must reconcile all scoped units and identify unresolved custody or response records; completion of the exercise is not completion of a real recall.

What do these words mean?
Key words

Key terms worth knowing.

Lot genealogy
Record links between input lots and finished batches.
Segregation evidence
Confirmation of controlled custody, distinct from a recorded hold.
Trace scope
Authorized set of potentially affected units.
Recovery denominator
Defined quantity base for physically received returns.
Movement hold
A restriction pending authorized review; not a safety guarantee.
Your route

6 lessons.
One useful project.

Work in order the first time. Each lesson makes something the next lesson can use.

  1. 1
    Up next

    Build input-to-output lot genealogy

    Save the genealogy and scope question for the authorized lead. Explain how genealogy links component lots to each finished batch; a common product name does not identify which units share an input.

  2. 2
    13 min

    Reconcile affected units across custody states

    Save a 60-unit scope reconciliation with custody and recipient IDs. Explain how affected units must reconcile from production to current custody and shipments; two records of one returned unit are not two units.

  3. 3
    10 min

    Hold lots and control movement records

    Save the movement hold and evidence gap register. Explain how a hold must identify affected stock and stop unauthorized movement in every relevant record; a database label alone does not prove physical segregation.

  4. 4
    12 min

    Prepare recipient-specific unsent notices

    Save three unsent notices plus their shipment-source links. Explain how a useful trace notice states the exact affected identifiers and authorized action, while excluding unrelated recipient information and unsupported remedies.

  5. 5
    11 min

    Measure trace coverage without claiming recovery

    Save distinct communication and custody measures with gaps. Explain how notice sent, acknowledged and units physically recovered are different measures; recovery must use received-unit evidence and a defined denominator.

  6. 6
    15 min

    Close a mock trace with unresolved quantities visible

    Assemble the mock trace packet with bounded learning claim. Explain how a mock recall report must reconcile all scoped units and identify unresolved custody or response records; completion of the exercise is not completion of a real recall.

Use the tools

Tools to help you practice.

See all tools
ZIP · practice files

Trace Product Lots and Rehearse a Recall practice files

Supplied practice cases, a blank working record, complete lesson instructions, and annotated worked examples.

Text worksheet

Your course project worksheet

A downloadable text worksheet with each lesson’s working output, space for your answers, and the shared final-project checklist. Save your own copy.

Source transparency

Sources and further study.

Explore the references behind the lessons and take your learning further. Source notes explain access and reuse.

43-5061.00 - Production, Planning, and Expediting Clerks
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

51-9061.00 - Inspectors, Testers, Sorters, Samplers, and Weigh ers
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

How to Conduct a Recall | CPSC.gov
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

Ready when you are

Start with the first useful move.

You’ll always know what to do, what to make, and where to go next.

Start lesson one