ODBC guide

Set inventory level

Sets the absolute inventory level for an item at a location. Use Action='set' in the WITH clause and provide the Available quantity. If the location is not connected, it will be automatically connected.

UPDATE InventoryLevels 
SET LocationId=25801916516
  ,Available=488 
WHERE InventoryItemId=43512276942948
WITH(
 Action='set' --or adjust or connect
, ContineOn404Error=0 
)

--OR--
/*
INSERT INTO InventoryLevels (InventoryItemId,LocationId,Available)
VALUES(43512276942948, 25801916516, 488)
--WITH( ContineOn404Error=0 )
*/