A Taiwanese supplement brand takes about 120 orders a day from its own website and two marketplaces. One assistant types each order into the ERP by hand: 3 minutes per order, 6 hours a day. Roughly 2 in every 100 orders end up with the wrong item code or tax type, and month-end reconciliation of payments against shipments takes the accountant 3 days. Order-to-ERP integration exists to move every order into the ERP automatically, traceably and with a way to resend it, so that every failure reaches a person.
When It Fits and When It Doesn't
| Good fit | Hold off |
|---|---|
| 30+ orders a day, keyed in by a dedicated person | Under 10 orders a day that take half an hour to key in |
| ERP in stable use for a year, with fixed item-code rules | ERP still being rolled out, or being replaced within six months |
| Several channels share one inventory and oversell often | Product specs change daily and item codes aren't set up yet |
| Month-end reconciliation takes more than 2 days | The sales platform offers neither an API nor an export |
Three Integration Methods and the Alternatives
| Option | Cost | Upside | Trade-off |
|---|---|---|---|
| Scheduled Excel/CSV import (file exchange) | NT$40,000–80,000 | No ERP changes; works without an ERP API | Hours of batch delay; breaks when the file format changes |
| Staging (intermediate) table | NT$80,000–150,000 | ERP reads on a schedule; the two systems stay decoupled | Needs the ERP consultant to write the import job |
| Official ERP API | NT$120,000–250,000 | Near real time; per-order error responses | Depends on ERP version and licensed modules |
| Off-the-shelf connector (SaaS) | Monthly fee | Fast to launch | Limited platforms and fields; little room to customize |
Chi (正航), a Taiwanese ERP vendor, groups integrations into three types: API, direct database connection, and scheduled Excel/CSV import, and warns that giving a website direct access to the ERP database carries the most risk. Digiwin (鼎新), Taiwan's largest ERP vendor, lists API integration or Excel import as the two routes for e-commerce. Which one you can use depends on your ERP version and licensed modules.
A 6-Week Rollout
| Phase | Timing | Deliverables | Tools |
|---|---|---|---|
| Audit and field mapping | Week 1 | Order field map; item, customer and tax-type mapping rules | Google Sheets, Notion |
| Choose the method | Week 2 | ERP interface spec, test company database | ERP consultant, Postman |
| Build the sync | Weeks 3–4 | Order queue, error queue, resend button | Laravel Queue, Redis |
| Inventory write-back | Week 5 | Scheduled push of ERP available stock to the website | Laravel Scheduler |
| Parallel run and sign-off | Week 6 | Two-week comparison of manual vs. automated entries | Reconciliation report, Slack or LINE alerts |
Master-data mapping decides whether the project works: website SKUs to ERP item codes (bundles split into component items), members to ERP customer codes (walk-in buyers can share one code), taxable/exempt/zero-rated to ERP tax types, and shipping fees and coupons each mapped to their own item code.
What It Really Costs
- Integration build: one website to one ERP takes about 60–100 hours for file exchange and 120–200 hours for an API
- ERP-side costs: API or interface module licenses plus ERP consultant work, commonly NT$20,000–80,000; get a quote from the vendor or reseller
- Hidden costs: cleaning master data (duplicate items, inactive customers) at 10–30 hours, staff time during the two-week parallel run, rework after platform updates
- Maintenance: NT$3,000–8,000 a month, covering error-queue monitoring and regression tests after ERP upgrades
Expectations vs. Reality
| Clients expect | What happens |
|---|---|
| Hooking up the API is the whole job | About 70% of the hours go into master-data mapping and exception rules |
| Orders hit the ERP the moment they're placed | Most companies sync only after payment clears; cash on delivery gets its own rule |
| No more errors after integration | Errors don't disappear; they move from "nobody noticed" to "sitting in the error queue" |
Five Traps and How to Avoid Them
- Duplicate orders: use the store order number as an idempotency key so each order is created once; Stripe's idempotency design is a good model
- Missed notifications: Shopify's docs state that webhooks must be answered within 5 seconds, and after 8 failed retries over 4 hours the subscription is removed; queue first, process later, and run a scheduled catch-up pull
- Silent failures: failed orders land in an error queue with a reason, and the owner is notified
- Returns and cancellations ignored: define ERP sales-return rules for partial refunds and exchanges
- Inventory tug-of-war: make the ERP the single source of truth for stock; the website only reserves quantities
Success Metrics and a 90-Day Roadmap
- Day 30: automated sync success rate of 98%+; manual entry under 1 hour a day
- Day 60: error queue cleared within 1 business day on average; zero oversells
- Day 90: month-end reconciliation down from 3 days to half a day; then consider adding a second channel
Decision Checklist
- ☐ More than 30 orders a day?
- ☐ Someone spends 2+ hours a day keying in orders?
- ☐ Month-end reconciliation takes more than 2 days?
- ☐ You've oversold or shipped the wrong item?
- ☐ The ERP won't be replaced within six months?
- ☐ Item-code rules are fixed and someone maintains them?
- ☐ You can get the ERP interface spec or consultant support?
- ☐ Your sales platform offers an API or order export?
- ☐ Someone owns the error queue?
- ☐ Budget of NT$80,000 or more?
Seven or more checks: worth doing. Fewer than four: clean up item codes and export formats first.
FAQ
Can this work if my ERP has no API?
Yes. A staging table or scheduled file exchange lets the ERP read orders on a timer; the trade-off is a longer delay.
What happens when an order fails to sync?
It stays in the error queue with a reason. Fix the master data, press resend in the admin panel, and the same order number will not be created twice.
Can marketplace orders be included too?
Yes, if the platform offers an API or a stable export format, though each platform needs its own field mapping.
Next Step
ScriptWalker's Order-to-ERP Integration Service starts at NT$80,000 (file-exchange setup) and includes the field map, error queue, resend mechanism and a two-week parallel sign-off. Send us your ERP name and version plus a week of sample orders, and a free 30-minute consultation will tell you which integration method fits.
- Email: [email protected]
- Phone: 0916-224-047
- LINE: @ufv9089p