When running Transaction Import for Payroll I receive Rejection PA_ERR_IN_IDENT_API

Under Projects Posting Associate I run a process to Import transactions where we specify our payroll batch and import transactions from OTL.  When running Transaction Import for Payroll I receive Rejection PA_ERR_IN_IDENT_API.  The meaning of this message is "An error has occured in cross charge identification program.  However, this error is only happening on one employee.  Other employees have charged time to the same projects and tasks without any errors.  This employee has also charged time to other projects without any errors.  We only have one operating unti so we should not be doing cross charging.  Any ideas of what