When setting a Bill or Material to subcontracting, the "Operations" tab is hidden. But it still effect eg. BoM Structure & Cost report. With this changeset, we get an error when we save a subcontracting BoM that has operations. opw-2513637 closes odoo/odoo#74441 X-original-commit: 41c7bd1461a5346a030ab194b5f7fafa87a4c45a Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>