Ref: E5: Invalid Request Format

  1. Login to SelluSeller.

2. Click on Catalogue > Others > Failed > Search your product.

3. Go to your product and click on the drop down arrow. Click on the "i" button and you will get the error message.

Note: This error message means that your product item description has invalid data. This usually when the long description you have added has invalid HTML tags, such as YouTube link or 3rd party URL link.

4. Open the product and check for description field.

5. Delete the video link form description field and paste it in Video URL field. Likewise, remove any invalid tags or third party URL links and click on the UPDATE button.

Hope this answers your question.
You can resolve this error in SelluSeller, by clicking here.

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