Can i have this field to be blank in my environment ?

Hi, i got this solution from oracle knowledge garden.  below statement is to blank out the cccrcd....Is this only applicable in Non-Currency environment.? Can i have environment which is not currency defined ?

Fetch From Cache Failed (078N) Error in P4314 - 3 Way Voucher Match (Doc ID 1395381.1)

1. Go to SqlPlus
2. Issue update query
3. SQL> UPDATE PRODDTA.F0010 SET CCCRCD = ' ' WHERE CCCO = '00001';
4. SQL> COMMIT;
5. Reset database cache

Reset database cache, can this be done through SVM ?

pls enlighten...