How To Fix W0128 - Max.requested del. time is maintained, but "Enter req. del. date" not set

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 128

• Message text: Max.requested del. time is maintained, but "Enter req. del. date" not set

What causes this issue?

You entered a maximum requested delivery time but did not correctly
select the "Enter requested delivery date" indicator.

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?

Select the "Enter requested delivery date" indicator or delete the
"maximum requested delivery date (days)".

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.