It is giving me error after this statement

EXECUTE IMMEDIATE strCurQuery BULK COLLECT INTO V_FILEID, V_FILENAME, V_EXTERNAL_ID, V_TRANS_DT,
V_TRANS_DT_TIME, V_SECOND_UNITS, V_FEDERAL_TAX, V_STATE_TAX, V_COUNTRY_TAX, V_CITY_TAX,
V_OTHER_TAX, V_DUAL_IMSI_FLAG, V_CALL_TYPE, V_MSC_ID, V_RATED_UNITS, V_LATE_CDR, V_AMOUNT,
V_ORIG_TYPE_ID_USG, V_POINT_ORIGIN, V_RECORD_TYPE, V_HOME_BID, V_SERVE_BID, V_ERROR_STATUS,
V_RECON_STATUS, V_PROCESS_DATE, V_IS_RCF, V_CALL_END_TIME, V_LOCAL_CALLTIME;

Actually error is not occuring every time of execution it is throwing error some times and some times my procedure is executed successfully