Use API to reduce parts from a lot

[mulix]

I'm working on a simple frontend for Part-DB.
Unfortunately, I'm struggling to reduce parts from a lot.
The API documentation contains the endpoint /api/parts/{id}, which represents access to a part.

To decrease the part with ID 137, I use, for example, a
PATCH to /api/parts/137 with the JSON body
{ "partLots": [ { "@id": "/api/part_lots/122", "@type": "PartLot", "amount": 4, "id": 122 } ] }

Unfortunately, that doesn't work. The result is
{ "@id": "/api/errors/400", "@type": "hydra:Error", "title": "An error occurred", "detail": "Nested documents for attribute \"partLots\" are not allowed. Use IRIs instead.", "status": 400, "type": "/errors/400", "description": "Nested documents for attribute \"partLots\" are not allowed. Use IRIs instead.", "hydra:description": "Nested documents for attribute \"partLots\" are not allowed. Use IRIs instead.", "hydra:title": "An error occurred" }

So, how do I decrease or increase a part in a lot using the API?

Best regards,
Michael

[mulix]

I'm still working on this issue.

An attempt to do it using PartLots doesn't work either.
PartLot-ID: 7
PartID: 118
New amount in Lot: 8

A curl -X 'PATCH' 'https://partdb.myhost.de/api/part_lots/7'
{ "amount": 8, "part": [ { "@context": "/api/contexts/Part", "@id": "/api/parts/118", "@type": "Part", "id": 118 } ] }
produces the same error.

{ "@context": "/api/contexts/Error", "@id": "/api/errors/400", "@type": "hydra:Error", "title": "An error occurred", "detail": "Nested documents for attribute \"part\" are not allowed. Use IRIs instead.", "status": 400, "type": "/errors/400", "description": "Nested documents for attribute \"part\" are not allowed. Use IRIs instead.", "hydra:description": "Nested documents for attribute \"part\" are not allowed. Use IRIs instead.", "hydra:title": "An error occurred" }

So how do you reduce or increase the inventory of a component using the API?

A great project, and many possibilities with the API, but such simple things aren't possible?

Best regards,
Michael