ORA-06512: at "APPS.IBY_EXTRACTGEN_PVT", line 412

Hi.  We are having a sql problem that I am unable to find an answer to in knowledge. 
There are many regarding this package, but not this specific one - none for line 412

Any help would be appreciated.  Thanks

oracle.apps.iby.exception.DatabaseException: SQLException occurred: ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at "APPS.IBY_EXTRACTGEN_PVT", line 412
ORA-06512: at line 1

Line 412 call CREATE_POS_PAY_EXTRACT_1_0

IBY_FD_EXTRACT_GEN_PVT.CREATE_POS_PAY_EXTRACT_1_0 (
             p_payment_instruction_id  =>to_number(l_param_1),
             p_payment_profile_id      =>to_number(l_param_2),
             p_from_date               => l_param_3,