Error 5665 and the brand name Amazon will not accept
This one reads like a typo and almost never is. Amazon is telling you that the brand string you sent is not one this account is allowed to use on this product.
Error 5665 is a permission error wearing the costume of a spelling error. Amazon is saying the brand value you sent is not one this account may use for this product. Check the exact string first, including trailing spaces and capitalisation, then whether the brand is enrolled and whether your account is linked to that enrolment. Inventing a new brand name does not get past it.
- It is about permission, not spelling. The string is only half the problem.
- A trailing space or a different capitalisation is a different brand to Amazon.
- Generic is a real brand value for genuinely unbranded goods, and misusing it has consequences.
- If the brand is enrolled in Brand Registry, your selling account must be linked to it.
- Changing the brand name to something new usually produces a fresh error rather than a listing.
The message names your records and your brand, which sends sellers to the spelling. Amazon is not usually commenting on spelling. It is saying that the pairing of this account and this brand value is not one it recognises as permitted.
Check the string exactly, because exactly is what it means
Amazon compares the brand value as a string. A trailing space, a double space, a lowercase first letter, an ampersand where the registered name uses the word and, a full stop after an abbreviation: each of those is a different brand as far as the comparison is concerned. Spreadsheets add trailing spaces without telling you, and a value pasted from a supplier sheet very often carries one.
So the first move is mechanical rather than clever. Copy the brand value out of the cell into a plain text editor and look at where the selection ends. If the highlight extends past the last letter, that is your error.
Then check whether you are allowed to use it
If the brand is enrolled in Amazon Brand Registry, Amazon will only accept that brand value from accounts linked to the enrolment. A seller who owns the brand but enrolled it under a different account, or whose enrolment is still processing, gets this error while being entirely entitled to the name.
This is also what happens to resellers. Holding stock of a brand does not give you permission to create catalogue entries under it. The route for a reseller is to list against the existing ASIN rather than to create a new one, which is a different workflow and not a fix for this error.
Generic is a real value, and it is not a workaround
For goods that genuinely have no brand, Generic is an accepted brand value in many categories. That is the correct answer for unbranded homeware, loose goods and plain commodity items, and it is the honest one.
It is not a way around the error for branded goods. Listing a branded product as Generic misrepresents the product, and it collides with the identifier rules as well: an unbranded product is also the case where a GTIN exemption is in play, and that path has its own requirements about branding being permanently affixed.
What does not work
Inventing a new brand name to get past the check usually produces a different error rather than a listing, because a brand Amazon has never seen may itself require an exemption or an approval before it can be used to create a product. You trade one blocker for another and add a confusing brand to your own catalogue.
Repeated resubmission of the same file does not help either. The comparison is deterministic. If the pairing of account and brand is not permitted, the twelfth upload is refused the same way as the first.
The order to work through it
First, read the exact message in your own processing report rather than a general description of the code, because Amazon states which value it rejected. Second, check the string for whitespace and capitalisation. Third, check whether the brand is enrolled and whether this account is linked. Fourth, decide honestly whether the product is branded at all, because if it is not, Generic or a GTIN exemption is the real path rather than a brand string.
Where this sits in the rest of your Amazon operation
Robnu is read-only on Amazon today: orders, returns, payouts and inventory sync so you can see and reconcile them, and it cannot accept Amazon orders or make their labels. Order processing is live for AJIO and Meesho. Related reading:
Sources & further reading
- Amazon Brand Registry India the enrolment route that changes what brand strings Amazon will accept from you.
- Amazon India seller forums where the failure shapes described here are reported by sellers. Read 11 October 2026.
- Amazon listing and image style guides login-gated. It redirects to Amazon sign-in, so the detailed rules it holds are not quoted here and are described as market convention instead.
Not legal or tax advice. Amazon changes fees, windows and policies without notice, and the detailed style guides sit behind a Seller Central login, so any figure quoted here as convention is not Amazon-published. Check anything you plan to act on against your own Seller Central account or flat-file processing report first.
Questions sellers ask
That the brand value you submitted is not one this selling account is permitted to use for this product. It reads like a spelling complaint and is usually a permission one. The two things to check are the exact string, including trailing spaces and capitalisation, and whether the brand is enrolled in Brand Registry with your account linked to that enrolment.
Yes. Amazon compares the brand as a string, so a trailing space, a double space, a different capitalisation or an ampersand in place of the word and all make it a different brand. Spreadsheets add trailing whitespace silently, and values pasted from supplier sheets frequently carry one, so this is worth checking before anything else.
Most often because the Brand Registry enrolment is held by a different account from the one you are listing with, or the enrolment is still being processed. Amazon only accepts an enrolled brand value from accounts linked to that enrolment, so being the genuine owner and being permitted by this account are two separate things.
Only if the product genuinely has no brand. Generic is an accepted value in many categories and it is the correct answer for unbranded goods. Using it for a branded product misrepresents the product and runs into the identifier rules anyway, since unbranded goods are also the case where a GTIN exemption applies and that has its own requirements.
Usually not. A brand Amazon has not seen before may itself need an approval or an exemption before it can be used to create a product, so you tend to trade this error for a different one while adding a brand you did not want to your own catalogue.
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