The minimum target stock is not maintained

What causes this issue?

Although you entered a maximum target stock, you did not enter a
minimum target stock.

System Response

The line is displayed for you to correct. If you do not make any
corrections, the minimum stock will be set by the system to zero.

How to fix this error?

Either enter a minimum stock or enter a maximum stock of zero. If you
enter a maximum stock of zero, the system does not use minimum and
maximum stock levels for calculating the target stock.
If you ignore this message by pressing Enter, the minimum target stock
remains zero and there is no lower limit for the target stock.

Error message extract from SAP system. Copyright SAP SE.