How to map multiple existing term IDs to an entity I'm trying to map multiple existing terms using their target_id values to an entity (Commerce Product) and I can only get the first value to map.

My yml file looks like this:

  'field_prod_category/target_id':
    plugin: explode
    source: tid
    delimiter: ','


And, for now, I'm hard coding two existing term ID values in through the source plugin like so:

$row-&gt;setSourceProperty('tid', '806,635');


But no matter what I try only the first term is referenced. And, yes, the term field is set to unlimited.

Any ideas?
You need to use plugin sub_process. File yml have soure like this:

  field_prod_category:
    plugin: sub_process
    source: tids
    process:
      target_id: tid


and soure plugin need to prepare:

$tids = [
      'tid' =&gt; 806,
      'tid' =&gt; 635
    ];
$row-&gt;setSourceProperty('tids', $tids);