Unknown Command

Error starting AT line : 1 IN command -
CURSOR c1  IS SELECT * FROM ca_account_t
Error report -
Unknown Command

Error starting AT line : 2 IN command -
exist NUMBER
Error report -
Unknown Command

Error starting AT line : 3 IN command -
BEGIN

FOR irec IN c1 LOOP
exist := 0;
SELECT COUNT(*) INTO exist FROM CA_ACCT_GDLNPRPS_T b
WHERE irec.fin_coa_cd = b.fin_coa_cd
AND  irec.account_nbr = b.account_nbr;

IF exist = 0 THEN
 INSERT INTO CA_ACCT_GDLNPRPS_T (FIN_COA_CD,ACCOUNT_NBR,OBJ_ID,VER_NBR,ACCT_EXP_GDLN_TXT,ACCT_INC_GDLN_TXT,ACCT_PURPOSE_TXT)
 VALUES (irec.fin_coa_cd , irec.account_nbr,SYS_GUID(),1,'MIGRATED FROM ORACLE','MIGRATED FROM ORACLE','MIGRATED FROM ORACLE');
END IF;

END LOOP;


END;
Error report -
ORA-06550: line 3, column 13:
PLS-00201: identifier 'C1' must be declared
ORA-06550: line 3, column 1:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action: