埋め込みの説明
@1@ : エラーの原因となったデータ名.
例題
[P2847.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. P2847. 000003 ENVIRONMENT DIVISION. 000004 CONFIGURATION SECTION. 000005 SPECIAL-NAMES. 000006 SYMBOLIC CONSTANT 000007 BLKLEN IS 80. 000008 INPUT-OUTPUT SECTION. 000009 FILE-CONTROL. 000010 SELECT SQFILE1 ASSIGN TO SYS001. 000011 DATA DIVISION. 000012 FILE SECTION. 000013 FD SQFILE1 000014 BLOCK CONTAINS BLKLEN RECORDS. 000015 01 SQF1REC PIC X(80). 000016 WORKING-STORAGE SECTION. 000017 01 BLKLEN PIC S9(2) BINARY. 000018 PROCEDURE DIVISION. 000019 END PROGRAM P2847.
P2847.cob 14: JMN2847I-S 名標'BLKLEN'は,一意な記号定数でなければなりません.