Hi,

In Odoo 15/16 the old “Correct inconsistencies for reservation” action was removed.

You can fix it by creating a Server Action on model Stock Quant with this simple code:

for q in env['stock.quant'].search([]):

    moves = env['stock.move.line'].search([

        ('product_id', '=', q.product_id.id),

        ('location_id', '=', q.location_id.id),

        ('state', 'in', ('waiting','confirmed','assigned','partially_available'))

    ])

    q.reserved_quantity = sum(moves.mapped('product_qty'))

Then run the action manually - it will recalculate and correct all reservation quantities.

Hope it helps.