"The 'kind' value 'MultiHash' specified in the partition key definition is invalid. Please choose 'Hash' partition type."

Hi there!
I'm using DAB to query a CosmosDB NoSQL container with partition keys of:

```
id: ID
/TenantId: String
/EntityType: String
/EntityId: String
```
Example:

The items within this table have been assigned the model of "Location"

I am trying to create an item using the "createLocation" function generated by DAB, with a mutation such as the below:

```
mutation{
createLocation(item:{
TenantId: "1",
EntityType: "FromDAB",
EntityId: "1",
Address: "HelloGitHub"
}) {
TenantId
EntityType
EntityId
Address
}
}
```

However I get a 404 message with the error:

`The 'kind' value 'MultiHash' specified in the partition key definition is invalid. Please choose 'Hash' partition type.`

Please could you let me know how I can use the "createLocation" mutation correctly to create an item within my database?

Thanks!

Rich