May be like this:
LOAD * Inline [
Code , Description
ApplyMap('mapCode', Code, '#NV') as Description
(ooxml, embedded labels, table is [ESA NAME]);
If you don't have embedded lables, you might need to make it no labels. Best way would be to use QlikView to create this for you using the File Wizard
Qlik Sense has its own file wizard (may be called a little different) which can be used to load an Excel file. I suggest using the wizard instead of manually typing the syntax out as we are all prone to errors.
Look at this video: Loading Excel and File Data (video)