Keywords can't be blank

The Synup API returns SY20100 in the errors array when this happens.

What the response looks like

{
  "data": null,
  "errors": [
    {
      "message": "Keywords can't be blank",
      "context": {},
      "code": "SY20100"
    }
  ]
}

Where it comes from

Documented under Rankings. The context field carries the offending value when one is relevant, and is empty otherwise.

See the full error code reference for every code the API can return.

Other Rankings errors