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Integrating TecDoc with eMAG Marketplace means building an automated flow that pulls data from your TecDoc catalog (vehicle-part fitment, OE codes, images, technical attributes) and transforms it into the product feed format required by the eMAG Marketplace API, with correct category mapping and periodic stock and price synchronization. Without this automated flow, a store with a few thousand parts ends up updating listings manually on eMAG, which leads to delays, stock mismatches, and rejected offers during marketplace validation.
For auto parts stores that already have a TecDoc catalog integrated, eMAG Marketplace is a natural next sales channel: high traffic volume, and buyers already expect to search by OE number and vehicle compatibility. The real challenge isn't publishing parts on eMAG — it's keeping the catalog synchronized automatically, without fitment errors and without duplicating work already done for your own store.
This guide covers the technical architecture of TecDoc-eMAG synchronization, category and attribute mapping, stock and price updates, common validation errors, and a practical implementation plan.
What TecDoc-eMAG Marketplace Integration Actually Means
TecDoc is the reference catalog for aftermarket auto parts, with vehicle-part compatibility structured by engine type (K-Type), model year, and vehicle model. eMAG Marketplace is the platform through which third-party sellers list products on eMAG.ro, using its own API (Marketplace API) with strict formatting rules for each product category, including the Auto-Moto-Bike category.
Integrating the two systems does not mean a direct TecDoc-eMAG connection — no such official product exists. It means building an intermediate layer (usually inside the store's Laravel/PHP application) that:
- pulls product data from the local database populated by TecDoc (name, OE code, images, technical attributes, fitment);
- transforms it into the format required by the eMAG Marketplace API (category, characteristics, EAN, product family);
- sends periodic stock and price updates to eMAG, without resending the entire catalog every time.
In practice, TecDoc remains the source of truth for technical part data, while eMAG Marketplace becomes an additional distribution channel for the same catalog, not a separate, manually maintained database.
Architecture of the TecDoc-eMAG Synchronization Flow
A stable synchronization flow typically has four separate components, each with its own scheduled job:
- Product sync (catalog) — runs infrequently (daily or on change), sends new products and updates attributes/images/ fitment for existing ones.
- Stock sync — runs frequently (every 15-60 minutes, depending on volume), sends only available quantity, without the rest of the product data.
- Price sync — separate from stock, since prices may follow different update rules (campaigns, margins, currency conversion for imported parts).
- Order retrieval — the reverse direction: eMAG sends customer orders back to the store for processing and shipping within the marketplace's deadline.
Separating these four flows matters for performance: sending the whole catalog on every stock update quickly hits the rate limits imposed by the eMAG API, especially for TecDoc catalogs with tens of thousands of SKUs.
Category Mapping: From TecDoc Structure to eMAG Taxonomy
The most common technical obstacle isn't the API itself — it's category mapping. TecDoc organizes parts into standardized product groups (e.g., brake pads, filters, shock absorbers), while eMAG uses its own Auto-Moto-Bike category taxonomy, with different mandatory characteristics for each category (e.g., for brake pads, eMAG may require the approval number or front/rear position).
The practical solution is a manually maintained mapping table, not an auto-generated one: each TecDoc product group is matched once with the corresponding eMAG category ID, and the mandatory attributes of the eMAG category are populated from equivalent TecDoc fields (or flagged as missing, for manual completion before publishing).
| TecDoc Field | eMAG Marketplace Field | Note |
|---|---|---|
| OE code / manufacturer code | part_number, part_number_key | Use the OE code as part_number_key to group variants. |
| Product group (e.g. oil filters) | category_id | Requires a manually maintained mapping table. |
| Vehicle fitment (K-Type) | "Compatibility" characteristic (descriptive) | eMAG has no technical K-Type equivalent; convert to structured text. |
| Product images | images (public URLs) | Images must be hosted on a public URL accessible by eMAG. |
| EAN (if available) | ean | Many aftermarket parts have no EAN — check eMAG's policy for products without EAN. |
Handling Vehicle-Part Fitment in the eMAG Feed
eMAG Marketplace has no native mechanism equivalent to TecDoc's K-Type fitment logic. In practice, stores solve this with two complementary approaches:
- Structured text in the description and characteristics — a list of compatible makes/models/years, generated automatically from TecDoc data and inserted into the product description or a dedicated characteristic, so buyers can visually verify fitment.
- Product title optimized with the main make and model — for parts with narrow compatibility (e.g., a single model), the title directly includes the make and model, which also helps eMAG's internal search.
For parts with very broad compatibility (e.g., an oil filter compatible with dozens of models), it's recommended to limit the displayed list to the main models and explicitly mention that the full list is available on request or on the store's own page — eMAG descriptions have length limits, and overloading them with exhaustive lists hurts readability.
Syncing Stock and Price: Practical Rules
Stock and price are the most sensitive parts of the sync, since an error here directly leads to unfulfillable orders or performance penalties from eMAG. A few practical rules:
- Send stock at a fixed interval (e.g., every 30 minutes), not only on change, to avoid desync caused by temporary network issues.
- Keep a safety margin (e.g., actual stock minus 1-2 units) for low-stock parts, to avoid overselling in the gap between two syncs.
- Keep pricing logic separate from eMAG campaigns — the price sent via API must be the real selling price; marketplace campaigns are configured separately, in the seller account.
- Log every error response from the eMAG API (validation rejection codes), not just successes — missing mandatory characteristic errors are the most common cause of rejected products.
Common TecDoc-eMAG Sync Errors and How to Avoid Them
The most frequent technical risks with this type of integration are predictable and generally have a direct mitigation:
| Risk | Typical Cause | Mitigation |
|---|---|---|
| Products rejected on publish | Missing mandatory characteristics for the eMAG category | Local feed validation before sending, based on the category mapping table |
| Overselling (negative stock) | Stock sync interval too long | Shorter interval plus a safety margin on stock |
| Rate-limiting / temporary API block | Sending the entire catalog on every update | Separate product, stock, and price flows into distinct scheduled jobs |
| Incorrect fitment display | Incomplete mapping between TecDoc K-Type and eMAG descriptive text | Periodic manual review of auto-generated compatibility lists |
| Images not loading | Invalid image URL or hosted on a non-publicly-accessible domain | Automatic validation of image URLs before sending in the feed |
Practical Implementation Plan (Phases)
For a store that already has TecDoc integrated locally, a realistic implementation plan for eMAG Marketplace synchronization looks like this:
- Week 1 — mapping and seller account. Open an eMAG Marketplace seller account, obtain API access, build the TecDoc-eMAG category mapping table for the main product groups.
- Week 2 — product feed. Build the job that generates and sends the initial product feed, with local validation of mandatory characteristics before sending.
- Week 3 — stock and price. Implement separate stock and price sync jobs, with error logging and alerting on repeated failures.
- Week 4 — order retrieval and testing. Connect the reverse flow (retrieving eMAG orders into the internal system) and test on a limited subset of products before publishing the full catalog.
A gradual rollout, category by category, is preferable to publishing the entire catalog at once — it allows quick identification of mapping issues without affecting seller account performance across the whole catalog.
When This Integration Is Worth the Investment
Automated TecDoc-eMAG synchronization clearly makes sense for stores with a TecDoc catalog of a few hundred SKUs or more and frequent stock updates. For very small catalogs (under 100 products) with infrequent stock movement, manual updates directly in the seller account can remain sufficient in the short term — the investment in an automated flow pays off once product volume or update frequency makes manual maintenance unsustainable.
Frequently Asked Questions About TecDoc-eMAG Integration
Is there an official direct integration between TecDoc and eMAG Marketplace?
No. TecAlliance (TecDoc) and eMAG are independent platforms, with no official common connector. Synchronization is built as a custom intermediate layer inside the store's application, pulling data from TecDoc and sending it through eMAG's Marketplace API.
How often should stock be synced to eMAG?
It depends on sales volume, but a 15-30 minute interval is a reasonable starting point for most auto parts stores, adjusted based on actual sales velocity and eMAG's policy on penalties for unfulfilled orders.
How are parts without an EAN code handled in the eMAG feed?
Many aftermarket parts have no manufacturer-assigned EAN. eMAG allows, under certain conditions, publishing without an EAN, but the exact policy should be verified directly in the current Marketplace API documentation, since rules can vary by category.
What happens if eMAG's category structure changes?
The TecDoc-eMAG category mapping table should be reviewed periodically (quarterly is recommended), since eMAG can update its taxonomy or a category's mandatory characteristics, and an outdated mapping directly leads to products being rejected on publish.
Can order retrieval from eMAG also be automated?
Yes — the reverse flow, retrieving orders placed on eMAG into the store's internal system, is a standard part of a complete integration and reduces the risk of missing the marketplace's shipping deadline.
Conclusion
Integrating TecDoc with eMAG Marketplace turns an already structured auto parts catalog into an additional sales channel, without duplicate manual product entry. The key to a stable synchronization is separating the flows (product, stock, price, orders), an actively maintained category mapping table, and local feed validation before sending, to avoid rejections and performance penalties on the seller account.
Want to automatically sync your TecDoc catalog with eMAG Marketplace? Contact us for a technical consultation.
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