Phantom Data? Error: 1:N Relationship Error: Record already linked to another.

[stellarfinn]

I have two databases. A Cost of Goods (COGs) database and a Products database. Once we're happy that a product will meet our margins, I push the product data from the COGs database to the Products database (create a new row). This has been working fine until a couple of products didn't get pushed to the Products database. I got this error when testing my automation manually with the data from the specific products that are failing.

The products in question had previously existed in the Products database, so is there some kind of phantom data that its comparing to and making this conclusion? I have other products that the automation works fine and get created in the Products database.

{
"success": false,
"response": "Error: 1:N Relationship Error: Record already linked to another."
}