Logic App > Cosmos PartitionKey Not Matching Error - azure-cosmosdb

Question

I'm scared to put this out there because it should be so easy and I am facing the same issue as the post here, here and here and I have tried each of the answers to no avail. Below is the current Resulting Input (redacted) and Related CodeView of the inputs.
The Result
{
"method": "post",
"headers": {
"x-ms-documentdb-raw-partitionkey": "\"2020\""
},
"path": "/dbs/xxxx/colls/smtp/docs",
"host": {
"connection": {
"name": "/subscriptions/..."
}
},
"body": {
"category": [
[
"cat facts"
]
],
"email": "example#test.com",
"event": "processed",
"id": "yada",
"partitionKey": "\"2020\"",
"sg_event_id": "yada yada",
"sg_message_id": "yada",
"smtp-id": "yada",
"timestamp": 1604345542
}
}
The Code View
{
"inputs": {
"body": {
"category": [
"#items('For_each')['category']"
],
"email": "#items('For_each')['email']",
"event": "#items('For_each')['event']",
"id": "#items('For_each')['sg_message_id']",
"partitionKey": "\"#{formatDateTime(utcNow(),'yyyy')}\"",
"sg_event_id": "#items('For_each')['sg_event_id']",
"sg_message_id": "#items('For_each')['sg_message_id']",
"smtp-id": "#items('For_each')['smtp-id']",
"timestamp": "#items('For_each')['timestamp']"
},
"headers": {
"x-ms-documentdb-raw-partitionkey": "\"#{formatDateTime(utcNow(),'yyyy')}\""
}
}
The error I'm getting is the usual one - PartitionKey extracted from document doesn't match the one specified in the header
I just can't see what I'm missing here now.
Thanks all.

Answer 1

First, as Matias comments, check your partition key path.
Then, change this code "partitionKey": "\"#{formatDateTime(utcNow(),'yyyy')}\"", to "partitionKey": "#{formatDateTime(utcNow(),'yyyy')}", in your document.
It works fine on my side: