2409842 - Error "is an invalid picklist value in import file or database for" When Importing File With Cascading Picklist Values.

When importing a file with picklist values maintained, you get the following error:
"(X) is an invalid picklist value in import file or database for (Y)"
Where (x) is a picklist value and (Y) is field.

However you can make the same selection in the UI without error.

SAP SuccessFactors Employee Central (EC) - All Versions

Import Picklist Label Unique , KBA , LOD-SF-EC-EDP , Import Employee Data (EC Core only) , Problem