join.missing "{value}" is not hold|passthrough|null; using "passthrough".

Warnings reference › data-router:join-bad-missing

Identifier

data-router:join-bad-missing

Raised by

Data Router

Since

1.39.0

What happened

missing decides what happens to a row whose lookup has not arrived: hold it back until it does, let it through unenriched, or let it through with nulls. The value given is none of the three, so the default passthrough was used - rows are delivered unenriched rather than being held.

The fix

Use 'hold', 'passthrough' or 'null'.

The smallest fix

join: { from: 'customers', localKey: 'customerId', fields: ['name'], missing: 'hold' }

Reference

Covered in full at the API reference.