Getting an Error in cs_servicerequest_pub.Update_ServiceRequest

Hello,

I have written a code to update the service request but it fails

prlog('I''m here');

                           

                            begin

                                    select  regexp_replace(i.ay_incident_no,'[^[[:digit:]into u_incident_number  from  dual;

                                    select incident_id into u_incident_id from cs_incidents_all where incident_number=u_incident_number and external_attribute_11 =  i.LG_JOB_CARD_NUMBER;

                               prlog('Incident Number to be updated: ' || u_incident_number);

                               prlog('Incident ID to be updated: ' || u_incident_id);

                            exception when others then

                                    t_output:= substr(sqlerrm,1,3995);

                                    prout('Incident Number Not Found: Going to Next Row');

                                    begin

                                            UPDATE xxaye_lg_data_in@xxlgintegration