Häufig gestellte Fragen
Is a marketplace tool enough, or do I need a full ERP?
Pure order tools such as Billbee are sufficient for beginners who mainly want to import orders, reconcile stock and generate shipping labels, but they typically offer neither a full purchasing nor an accounting module. As soon as materials planning, purchasing, multi-level warehouse logic and integrated accounting come into play, a full ERP such as Xentral or plentyONE is usually the better choice, as it also scales with very high order volumes and many channels. As a rule of thumb: the more channels, storage locations and tax requirements you have, the sooner an ERP pays off compared with a pure order solution. Standard interfaces such as REST API, EDIFACT (especially for EDI-driven platforms such as Otto or Zalando), OData and ZUGFeRD should be supported directly in order to avoid expensive custom integrations.
How do I prevent stock errors and overselling with FBA and my own warehouse?
FBA stock should be managed strictly separately from self-fulfilled warehouse stock as its own virtual warehouse and synchronised regularly via the Amazon SP-API. The FBA Inventory API distinguishes states such as fulfillable, inbound, reserved and unfulfillable, so an ERP only feeds the actually saleable (fulfillable) quantities into the channels. If an item sells on one channel, the stock change should be reported to all other marketplaces as promptly and automatically as possible, because otherwise overselling and cancellation rates increase. A safety buffer of a few percent additionally absorbs sync latencies; the exact configuration varies depending on the assortment, volume and customising depth of the specific ERP setup.
Why is the Amazon Buy Box so important, and do I need a repricer for it?
The Buy Box is the purchase field through which, according to common industry analyses, around 82 percent of all Amazon sales are made, and on mobile devices sometimes even more. Anyone who does not hold it on a listing with multiple sellers effectively remains in the background for many buyers, as they rarely click through to alternative sellers deliberately. However, the Buy Box is decided not only by price but also by availability, delivery time and performance metrics such as the Order Defect Rate. A repricer that acts dynamically and within the min-max limits specified by the ERP can help keep pace; without a well-thought-out pricing strategy, however, purely static list prices lose the Buy Box more often on competitive marketplaces.
Which compliance obligations must a marketplace ERP cover?
Since 1 July 2022, operators of electronic marketplaces have in principle only been allowed to enable sales if merchants provide evidence of registration in the LUCID packaging register under the German Packaging Act; if this evidence is missing, sales bans and fines (up to 200,000 euros depending on the violation) are the risk. Added to this is marketplace liability under Section 25e of the German VAT Act (§ 25e UStG): platforms such as Amazon and eBay digitally verify the stored VAT identification number with the Federal Central Tax Office (Bundeszentralamt für Steuern) in order to release themselves from liability for unpaid VAT. Depending on the assortment, further registration obligations apply, such as ElektroG/Stiftung EAR (WEEE/EPR number) for electrical equipment as well as separate EPR registrations in other EU countries. A modern ERP manages this master data centrally and can feed it into listings and marketplace accounts, making it easier to avoid suspensions due to missing evidence.
How does an ERP support VAT for cross-border marketplace sales (OSS)?
For EU distance sales to private customers, a uniform delivery threshold of 10,000 euros net per year (aggregated across all EU member states) has applied since 1 July 2021; if it is exceeded, VAT is due in the respective country of destination. Instead of having to register individually in each country, merchants can report these sales in a bundled way via the One-Stop-Shop procedure (OSS) in their country of establishment, which significantly reduces the bureaucratic burden. An ERP should record deliveries by country with the correct tax rate and make them cleanly analysable for the OSS report, ideally separated from purely domestic sales. If goods are stored in several countries, for example via Amazon programmes with EU-wide fulfilment, additional local VAT registrations are required, which is why coordination with a tax advisor or a specialised tax compliance solution is recommended.
Who helps with ERP selection for marketplace sellers?
For the selection, specialised selection support with demonstrable e-commerce and marketplace experience is worthwhile, since connectors, stock logic and tax topics are industry-specific. Those looking for more general support will find it under ERP consulting. A structured selection combines a requirements document with your own channel and volume requirements, a demo with your own real data, reference visits to comparable merchants, and a proof of concept on two to three critical processes such as FBA sync, listing maintenance and returns. This makes it possible to check realistically before the decision whether the system actually handles your marketplace complexity.