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Catch product data errors before a Merchant Center upload
Short answer
An automated comparison of the supplier's file with the Allegro listings file, by variant code, shows differences before a listing goes on sale: another colour, another size or an empty required field. The employee sees both values and the source, and approves the fix. At Syntalith the automation costs from €3,000 net, and with 2,000 listings a month at 3 minutes each it pays back in 1.0 month.
How we workDetails ↓
- 01Call30 minutes with an engineer, free
- 02PrototypeA working system on your process and data, free
- 03ImplementationTarget and fixed price in the contract; 50% at signing
- 04Acceptance50% once the agreed target is met
- net for the automation of one process, build paid once
- from €3,000
- from signing the contract to acceptance
- 2–6 weeks
- free prototype on your cases
- €0
We belong to the OpenAI and Anthropic partner programmes and learn through their official courses. What this means ↓
Author: Syntalith · 3 min read
Statistics
E-commerce and automation: statistics 2026
1.0 mo.
payback of a €3,000 automation at 2,000 listings a month: €3,490 of work today, €533 with checking and the model. Scenario.
78%
According to Eurostat (2025), 78% of EU internet users bought or ordered goods or services online in the previous 12 months.
Source: Eurostat, e-commerce statistics for individuals (2025) ↗
10%
According to Eurostat (2025), 10% of EU online shoppers received wrong or damaged goods.
Source: Eurostat, e-commerce statistics for individuals (2025) ↗
20.0%
According to Eurostat (2025), 20.0% of EU companies with at least 10 employees used AI.
Source: Eurostat, 20% of EU enterprises use AI technologies (2025) ↗
50%
According to the European Commission (2026), half of EU SMEs and mid-caps name high investment costs as a barrier to AI.
Source: European Commission, Flash Eurobarometer 578 (2026) ↗
Figures checked: 22 October 2026
Product data checks: the same shoes, another colour in the listing
A shop sells one model of shoes in several colours and sizes, and each version has its own manufacturer code. The supplier's spreadsheet says „navy” for the code of the navy shoes in size 39, and the file prepared for Allegro says „black”. An employee fixes the colour, and at the next catalogue update the error comes back.
The program lines up both rows by code and shows the difference: the shoe code, both colours and the place in the supplier's spreadsheet. The code matters, because the shop also sells black shoes of the same model: a comparison by name would join two different pairs and suggest a change to a correct listing. If the shop's own data also says „black”, the fix goes to the place the listings file is built from, so the error does not come back.
- 01Filesthe supplier's spreadsheet and the listings file
- 02Matchby the manufacturer's variant code
- 03Differencescolour, size and other attributes side by side
- 04Empty fieldsthose the category requires, to be filled in
- 05Fixat the source of the listings file, approved by an employee
- An optional field may stay empty
- A required field must be filled in before listing
- „None” and random characters are wrong values
- The colour of another pair of the same model is no source
What automated product data checks cost and when they pay back
- Today
- 2,000 listings × 3 min = 100 h (€3,490)
- With the system, a person checks the output in 15% of the time
- €524
- Model, 1 call per case, Claude Sonnet 5.5
- €9
- Cost of one case
- €1.75 today, €0.27 with the system
- Saving
- €2,957 a month
Payback of €3,000
1.0 month
The volume, the time and the checking share are the scenario's assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat. Model: 1,500 input tokens and 200 output tokens per call at Anthropic's rates, converted at the ECB rate of 1.1205 USD per euro on 22 October 2026.
The count covers the work around each case: searching, reading, writing and handing over. What remains is the time to check the result, 15% of today's work in the scenario. Before the quote we measure both times on 20 to 100 cases the team has already handled, in a free test that takes 5 working days.
The scenario assumes 2,000 listings a month at 3 minutes of manual checking each. With catalogue updates from several suppliers, this time grows with every new data delivery.
You can compare a spreadsheet without AI
When the supplier sends a tidy spreadsheet and the products have matching codes, an ordinary program is enough to compare colours and gaps. First check your current import and how data is filled in from the catalogue. Allegro describes its attributes (in Polish): they depend on the category, and product information can be found at the manufacturer, the distributor or on the packaging. AI helps when an employee looks for data in different manufacturers' documents: they get a proposed value with the page where it was found. Price list checks are covered in the article on supplier price lists.
A tidy spreadsheet, matching codes
a program that compares the files
from €3,000
Data in different manufacturers' documents
AI reading with the page named
from €3,000
Buyers' questions about an unclear description
answers linked to the listing
priced after the review
Where to start
Before you cover the whole catalogue, show a few listings the team knows well, including correct ones. If the program reports differences in correct listings, the rules need changing before a wider start. Buyers' questions are covered on Allegro for online stores. We build this kind of system as part of our AI automations. For the free process review, a description of one case from the last few weeks and the tools it went through is enough. You do not need to send confidential documents, and you receive a written plan within 2 working days.
Worked example · Scenario
How we count the payback: listings in a shop
We run the same count for your catalogue in the free process review.
€2,792
a month for handling 800 orders that bypass the checkout
Payback: 1.3 mo.
6 minutes to retype an order or answer a question and checking in 15% of the old time are our assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat, for companies with 10 or more employees. Model cost: reading the order in our system (about €0.0006) plus matching the lines (Claude Sonnet 5.5, about 3,000 + 500 tokens), at the ECB rate of 1.1205 USD per euro on 22 October 2026.
See the full calculation →