Long text field is missing in 0costelmnt_text data source

Hello SAP Experts,

My requirement is to get Long text of 0costelmnt in SAP BW. When I checked extract structure of standard data source 0costelmnt_text I can see field long text. Also when data extracted in RSA3, long text field is shown but when I replicate data source in SAP BW, Long text field is not coming.

Please advise how to get it in SAP BW.