10000741 
Message
Quantity defined causes inventory to exceed defined maximum; in "Quantity", enter valid value
Diagnosis
In a sales or purchasing document, on the Contents tab, in the Quantity column, you have entered a quantity that is greater than the defined maximum quantity for that item.
Procedure
In the Quantity column, decrease the amount so that the total number of items remaining will not exceed the defined maximum quantity.
Note
To view the defined maximum quantity of an item:
Open the Item Master Data window and navigate to the item whose maximum quantity you want to view.
Choose the Inventory Data tab. The maximum quantity is specified in the Inventory Level Maximum field.
To view the available inventory quantity of an item:
Open the Item Master Data window and navigate to the item whose available quantity you want to view.
Choose the Inventory Data tab. The available quantity is specified in the Available column.