Transfer date cannot be determined - check incoterm &1

What causes this issue?

A data conflict has occurred in the dateline.
The transfer date determined from the Incoterm does not exist in the
date line.

System Response

The system cannot calculate any dates.

How to fix this error?

Check the transferred incoterm or add the transfer date to the
transportation chain.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.