SQL0171 Error Message

Every now and then I'm getting the SQL0171 error when attempting to open
cursor below. I'm at a lost on what cause this error and why the error
occur irregularly. Help....


C/exec sql
C+ close mergedFileCursor
C/end-exec

C/exec sql
C+ declare mergedFileCursor scroll cursor for
C+ select
C+ PSNStr as CCStr,
C+ PSNEnd as CCEnd,
C+ cast('CCM ' as char(10)) as fileType,
C+ cast(
C+ (case PSMCOM
C+ when 'RESYNC' then 'BOSS'
C+ else 'CCM'
C+ end
C+ )
C+ )
C+ as char(10)) as recordType,
C+ cast(
C+ digits(PSULCY)||digits(PSULYR)||
C+ digits(PSULMO)||digits(PSULDY)||
C+ digits(PSULTM)
C+ as char(14)) as lasChange,
C+ RRN(BLCAPASPF) as "rrn"
C+
C+ from BLCAPASPF
C+
C+ where PSFreq = :processThisAsgnKey.freq and
C+ PSBaud = :processThisAsgnKey.Baud and
C+ PSNEnd >= PSNStr
C+
C+ union all
C+ select
C+ ECCPCDFrm as CCStr,
C+ ECCPCDTo as CCEnd,
C+ cast('BOSS' as char(10)) as fileType,
C+ cast('BOSS' as char(10)) as recordType,
C+ cast('BOSS' as char(10)) as recordType,
C+ cast(
C+ replace(char(curdate(), iso), '-', '') ||
C+ replace(char(curtime(), iso), '.', '')
C+ as char(14)) as lasChange,
C+ RRN(BLCCMBPF) as "rrn"
C+
C+ from BLCCMBPF
C+
C+ where ECFreq = :processThisAsgnKey.freq and
C+ ECBaud = :processThisAsgnKey.Baud and
C+ ECCPCDTo >= ECCPCDFrm
C+
C+ order by
C+ CCStr, CCEnd
C/end-exec

C/exec sql
C+ open mergedFileCursor
C/end-exec



Below is what the SQL0171 message said:
Message ID . . . . . . : SQL0171 Severity . . . . . . . : 30

Message type . . . . . : Diagnostic

Date sent . . . . . . : 10/23/08 Time sent . . . . . . :
10:45:13


Message . . . . : Argument *N of function REPLACE not valid.

Cause . . . . . : The data type, length, or value of argument *N of
function
REPLACE specified is not valid.

Recovery . . . : Refer to the DB2 UDB for iSeries SQL Reference topic
in
the Information Center for more information on scalar functions.
Correct the
arguments specified for the function. Try the request again.