How did you created, via ISQL ?
You must commit transaction in which was created before you reference it.
Metadata changes runs in transactions that must be commited before you can actually see changes.

>I have a stored procedure as below. The return value of the stored
>procedure I want to use in the SELECT statement of mine. Currently I have
>tried to utilize it this way and I receive an error stating that the
>"Function Unknown OSACCTDRAMT". Upper Lower case of the function name does
>not seem to be a problem.
>
>SELECT OSAcctDrAmt(s.bDrAmt, uf.bDr, uf.bCr) AS bBalDr
> FROM tAccountsJV t
> JOIN sAccountsJV s
> ON s.iPID = t.iID
> AND s.iAcctID = 485
> LEFT JOIN uOSAccounts uf
> ON uf.iPID = t.iID
> OR uf.iSID = t.iID ;
>
>The Stored Procedure is as follows;
>
>SET TERM ^ ;
>
>CREATE PROCEDURE OSACCTDRAMT (
> BDRAMT DOUBLE PRECISION,
> BDR DOUBLE PRECISION,
> BCR DOUBLE PRECISION)
>RETURNS (
> BOSDRAMT DOUBLE PRECISION)
>AS
>begin
> bOSDrAmt = CASE WHEN (bDrAmt > 0 AND bCr > 0) THEN bDrAmt - bCr
> WHEN (bDrAmt > 0 AND bDr > 0) THEN bDrAmt - bDr
> WHEN (bDr IS NULL AND bCr IS NULL) THEN bDrAmt
> ELSE 0 END ;
>
> suspend;
>end
>^
>
>SET TERM ; ^
>
>GRANT EXECUTE ON PROCEDURE OSACCTDRAMT TO SYSDBA;