Clothing retail has a stock problem that most trades do not: the same item exists in several sizes and several colours, and they are not interchangeable. A medium blue is not a substitute for a large black.
The variant problem, stated plainly
One design in five sizes and four colours is twenty distinct things that have to be counted, sold and reordered separately, even though everyone in the shop calls them by one name.
Vanij does not have a built-in variant system. There is no parent product with size and colour options underneath it. That is a real limitation for this trade and it is better said here than discovered later.
The workaround, and whether it suits you
The practical approach is one product record per variant, with the size and colour in the name and a distinct SKU. So a shirt becomes several products rather than one product with options.
For a shop with a moderate range this works perfectly well, and it has the advantage of making stock counts unambiguous. For a shop carrying hundreds of designs across a full size range, the product list gets long enough that this is genuinely worse than a proper variant system, and you should weigh that honestly before committing.
A useful test: count your designs, multiply by your average number of size and colour combinations, and ask whether you would be comfortable scrolling a list that long.
Seasons make stock decisions urgent
Unlike a hardware shop, where stock keeps, apparel loses value on a schedule. Knowing what has not moved is more useful here than in almost any other trade, because the answer changes what you discount and when.
The figure worth watching is not total stock value but which specific lines have not sold, which is a good reason to keep variants distinct in the first place.
Exchanges are more common than returns
A customer bringing back the wrong size usually wants a different size, not their money back. That is two movements: goods back in, different goods out.
Recording that as an edit to the original bill loses both. The correct handling is a credit note for what came back and a fresh sale for what went out, which leaves stock right for both variants and leaves a record either side can check.
Discounting is normal, and needs to be visible
Apparel runs on discounts in a way that many trades do not: seasonal sales, negotiated prices, festival offers. If discounts are handled by quietly typing a lower rate, your reports will show healthy revenue and you will have no idea what discounting cost you.
Recorded as an explicit discount instead, it becomes a number you can look at, which is the first step to deciding whether it was worth it.
Bulk buyers change the document
Many clothing shops sell retail and also supply smaller shops or institutional orders. Those buyers are frequently registered businesses who need a proper tax invoice with their GSTIN, and sometimes want a quotation before confirming.
Naming variants so the list stays usable
If you are going to keep one product per variant, the naming convention is what decides whether the list is workable or miserable.
What works is putting the design first and the variant details last, consistently, so that searching the design name brings every variant together in one block. A shirt entered as one name with size and colour appended sorts sensibly; the same shirt entered with the colour first scatters across the list.
Use the SKU for the same job. A short design code with a size and colour suffix makes the variant identifiable at a glance on the bill and on a stock count, which matters when someone else is doing the counting.
Counting stock in a shop where nothing is packaged
Apparel stock counts are done by hand, on racks, usually after closing. That reality should shape how much precision you ask of yourself.
Trying to maintain a live, perfectly accurate count across every variant in a busy shop is how stock tracking gets abandoned. Counting the lines that matter, on a schedule you can actually keep, produces numbers you trust, and a number you trust is worth more than a more precise one you do not.
The lines that matter are the expensive ones and the ones that are not moving. Those two groups are where the money is tied up.
The honest summary is that apparel is the trade where Vanij's lack of a variant system is most felt. For a moderate range it is a naming discipline and nothing more; for a large one it is a real constraint worth weighing against everything else before you decide.
How Vanij fits
Vanij handles per-variant products with distinct SKUs, explicit line-level and whole-bill discounts, credit notes for returns and exchanges, quotations for bulk buyers, and stock counts per product. It does not have a parent-and-variant product structure, as above.
See also credit notes and retail billing software.