Not able to find the values of a dropdown!

Dear Experts,

I am not able to find where the code is written to enter values into a dropdown.

I am not able to find the code in WDDOINIT, WDDOMODIFYVIEW. Also, the domain is WAERS which has value table TCURC containing 196 currencies but the screen has maximum upto 50 currencies.

I am not able to find the code where currencies are fetched in dropdown.

Please advice.

Please note that I opened the methods and did Ctrl + F with the keyword (REC_CURR).

Regards

Mani