DELETE with wrong header returns 404 although entity is existing - fiware-orion

Question

We accidentaly inserted entities into orion using the wrong header (typo)
fiware-service-path instead of the correct one fiware-servicepath (withouht the last hyphen) and now I am unable to delete the entities. I also tested the python script delete_entities_by_query directly on the server without any authorization and that also returns a list of entities.
There are 61 entities
There are 0 pages of 500 entities (and a final page of 61 entities)
Trying to delete always result ins a 404 although the following query returns entites:
--header 'fiware-service: something' \
--header 'fiware-service-path: asdf' \
--header 'Authorization: Bearer TOKEN'
e.g. returns an entity
id:urn:ngsi-ld:6c99ecaa-5cee-4f27-b936-3ccbe8c42d66
DELETE:
curl --location --request DELETE 'https://<orion>/v2/entities/urn:ngsi-ld:6c99ecaa-5cee-4f27-b936-3ccbe8c42d66' \
--header 'fiware-service: something' \
--header 'fiware-service-path: asdf' \
--header 'Authorization: Bearer TOKEN'
returns a 404.
{"error":"NotFound","description":"The requested entity has not been found. Check type and id"}

Answer 1

The right header to specify service path in Orion is fiware-servicepath (not fiware-service-path). Maybe that is the cause of the problem (the fiware-service-path header is ignored by Orion, so it assumes fiware-servicepath: / implicitly, the entity is not found there and 404 is returned).
Note also that the syntax for service path mandates to start with /. Thus, asdf is not a valid service path, while /asdf is.