Break-fix drills

A short exercise that starts from a broken system: see the error, find the setting behind it, fix it and prove the fix.

Most of the support work on a running ERP system is not building new things but finding why something that worked yesterday fails today. A drill gives you one such failure on a prepared copy of Calder: a user reports an error, and you trace it to the one setting or record that causes it, fix it where it belongs and run the failed step again.

1. See the problem: run the step that fails and read the message.
2. Find the cause: pick the right fix from four plausible ones.
3. Fix it on the screen where it belongs, as the team that owns it.
4. Prove it: run the failed step again.

Each drill starts from its own prepared copy of the fictional Calder Pumpworks, with one thing broken, and is saved in this browser apart from your company. You don't need to finish the core path first. All codes and values are fictional course labels.

One a day: the daily drill is the same for everyone each day, and keeps a streak in your browser.

Finance

• The goods receipt that won't post

  5 min · Warehouse clerk sees it, general ledger accountant fixes it

  Goods receipt for the Orrin motor purchase order refused: posting period 2026-11 is not open for company code CP10.

• The delivery that won't start

  6 min · Shipping specialist sees it, credit manager fixes it

  Delivery for Hallam's order HFS-2304 refused: the order is blocked for credit (limit 4,000.00 in segment CR01).

• The shipment that won't leave the dock

  6 min · Warehouse clerk sees it, finance consultant fixes it

  Goods issue for Brennock's delivery refused: account determination is missing for posting key COGS in chart of accounts CPCA.

• The seal kits that can't be valued

  5 min · Warehouse clerk sees it, cost controller fixes it

  Goods receipt for the Ridgeline seal-kit purchase order refused: CP-SK200 has no standard price in plant CP11.

• The carrier Calder can't pay

  6 min · Accounts payable accountant sees it, master data specialist fixes it

  Freight settlement for Tallis's truck (BWU-PO-5648) refused: carrier 20000006 has no supplier data in CP10.

Procurement

• The invoice that won't pay

  6 min · Accounts payable accountant sees it, accounts payable accountant fixes it

  Payment run for CP10 found nothing to pay: Orrin's invoice is blocked for payment (price 900.00 above the purchase order, above the 250.00 tolerance).

• The purchase order that won't save

  5 min · Buyer sees it, master data specialist fixes it

  Purchase order for the motor requisition refused: supplier 20000001 isn't set up for company code CP10.

Production

• Still building a cancelled order

  7 min · Production supervisor sees it, production supervisor fixes it

  Release refused: missing parts for Brennock's order (impellers, motors and seal kits, none available), although parts for three pumps were received last week.

• The test the books never heard about

  6 min · Cost controller sees it, integration specialist fixes it

  Settlement refused: the order still has an unconfirmed operation, 0020 Pressure test. The test technician says the test was confirmed on Friday.

• Twelve seal kits for six pumps

  6 min · Shop floor operator sees it, production supervisor fixes it

  Assembly's confirmation refused on the dispatch list: the backflush needs 12 seal kits (CP-SK200) and only 6 are in stock.

Sales

• The order that can't be priced

  5 min · Customer service representative sees it, order-to-cash consultant fixes it

  Sales order for Brennock refused: no pricing procedure is assigned to sales area CPUS/10/PU.

Planning

• The spare bearing nobody can order

  6 min · Buyer sees it, master data specialist fixes it

  Purchase order for 40 CP-BRG6310 refused: CP-BRG6310 has no plant data for CP11.

• The requisition with no supplier

  6 min · Buyer sees it, buyer fixes it

  Purchase order for the seal-kit requisition refused: the requisition has no supplier (no purchasing info record for CP-SK200 in CP11).

Logistics

• The order that can't be taken

  5 min · Customer service representative sees it, supply chain consultant fixes it

  Sales order for Brennock refused: no shipping point is assigned to plant CP11.

• The truck that should have left yesterday

  6 min · Transportation planner sees it, transportation planner fixes it

  Tender refused: the freight order should have left by 20 December, and no carrier can pick it up in the past.

• The pallet that weighs nothing

  5 min · Transportation planner sees it, master data specialist fixes it

  Freight unit for Brennock's delivery refused: ES-200 has no gross weight.

• Nowhere to stage the pick

  5 min · Warehouse clerk sees it, supply chain consultant fixes it

  Pick tasks for Hallam's delivery refused: RKDC has no staging bin.

• The seal kits nobody can pick

  6 min · Warehouse clerk sees it, warehouse clerk fixes it

  Pick tasks for Hallam's delivery refused: 90 CP-SK200 sit in bins being counted.

• The pumps that can't be received

  5 min · Warehouse clerk sees it, supply chain consultant fixes it

  Receiving ES-200 into RKDC refused: ES-200 has no putaway rule in RKDC.

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