I use the graph try-it-yourself and the item in the board is create without the columns values, no error too
This is my request, the name of the field is in Hebrew
mutation {
create_item (board_id:2741432713, item_name:“test02”, column_values:
“{"שם סעיף תקציב":"שם סעיף תקציב"}”)
{
id
}
}
The response is
{
“data”: {
“create_item”: {
“id”: “2831461223”
}
},
“account_id”: 5226483
}