Quantity per container should be a multiple of the rounding quantity

What causes this issue?

If you have maintained the fields, 'quantity per kanban' and 'rounding
quantity', the quantity per kanban container should be a multiple of the
rounding quantity.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Correct your entries in the appropriate fields so that the kanban
container quantity is a multiple of the rounding quantity.

Error message extract from SAP system. Copyright SAP SE.