Hello,
We use the API V2 to create subitems and then retrieve those items with the following query
query {
boards(ids: my_board_id) {
items(ids: my_item_id) {
column_values(ids: "subitems") {
value
}
}
}
}
For some items the API doesn’t return all the subitems that we can see in the user interface.
Anyone had this problem before?
Hey there @vivimonday 
Thanks for taking this over to the community! 
I’ve just tested the query you are using on multiple boards and multiple items with subitems within my account and the results seemed to have always match what I see within the UI. Have you been able to try the queries I have provided over email that query the sub-item board directly instead of querying the parent board’s values?
If anyone within the community has had a similar experience, I’d love to hear more about that as well!
-Alex