The specified inventory item could not be found.

Retired Boards Appdev Fulfillment Api
1

To get inventoryItem.id, location.id and stock I run:

product(id: "gid://shopify/Product/' . $productId . '") {
    variants(first: 10) {
        edges {
            node {
                inventoryItem {
                    id
                    inventoryLevels(first: 10) {
"                        edges {
                            node {
                                id
                                location {
                                    id
                                }
                                quantities(names: ["available"]) {
                                            id
                                            name
                                            quantity
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

I use those values than to update stock:

        $body = [
            'query'     => '
mutation inventoryAdjustQuantities($input: InventoryAdjustQuantitiesInput!) {        
    inventoryAdjustQuantities(input: $input) {
        userErrors {
            field
            message
        }
        inventoryAdjustmentGroup {
            createdAt
            reason
            referenceDocumentUri
            changes {
                name
                delta
            }
        }
    }
}',
            'variables' => [
                'input' => [
                    'reason'  => 'restock',
                    'name'    => 'available',
                    'changes' => [
                        [
                            'delta'           => $delta,
                            'inventoryItemId' => $inventoryItemId,
                            'locationId'      => $locationId
                        ]
                    ]
                ]
            ]
        ];

How can I get:
“The specified inventory item could not be found.”

?

If I run the update on the same productId again, it works.