Need reason for the attached error message and provide details as to why the WORKFORCE_SYNC is failing.

SQL error. Stmt#:332 Error Position:0 Return: 8604 - [IBM][CLI Driver][DB2] SQL0913N Unsuccess

Hi,
I am trying to load a set of data files using Application Engine and CI.
I was successfully able to load 1 file with 500 rows and without any issues.
but while loading the 2nd file I encounterd an error:
"SQL.Execute: SQL object is not open, or is a open on a select. (2,295) AF_ACCT_TRAN.MAIN.GBL.default.1900-01-01.Step01.OnExecute PCPC:5107 Statement:71"

Can someone please help?

Following is my code:

I am loading data from a CSV file into PS database using App engine and CI.Only the first row of data gets loaded ,while loading the 2nd row it gives an error saying Instance already exists for a CI.
So create failed.Can some one please help?
Following is my code:

WHILE INSERTING DATA FROM CI I AM GETTING THIS ERROR-Instance already exists {TM_JOB_CI}....PLZ HELP.. TM_JOB_CI IS MY CI NAME

I am getting the error 'Unknown key of uninstantiated object {USER_PROFILE.UserID} (91,16)' while saving the component interface using the following code:-

SQLExec("Select OPRID from PSOPRALIAS where PERSON_ID = :1", RD_PERSON.PERSON_ID.Value, &lstrOPRID);

If All(&lstrOPRID) Then
try
rem ***** Set the Log File *****;
&fileLog = GetFile("C:\temp\USER_PROFILE.log", "w", "a", %FilePath_Absolute);
&fileLog.WriteLine("Begin");
&oSession = %Session;
&oSession.PSMessagesMode = 3;