open APPS.FND_CONC_STAT to SQL Developer and look what select causes that. Probably there is something like SELECT bla_bla INTO var FROM bla.
When you have spotted that table and perhaps parameters that did not result excatcly one row, you start thinking why not.
If you do not have information about parameter(s) then write debug code that shows those values.
Thanks Jarkko. I will raise it under oracle applications forum.
Moved to the EBS forum
I have not used API APPS.FND_CONC_STAT in my code. So, I am not sure why this error is coming. Please elaborate in detail.
Please post the code you use to submit the concurrent request.
I am using front end to submit the concurrent request.