COBOL Manual for TNS/E Programs (H06.08+, J06.03+)

Cause
An exception phrase corresponds to a statement with which it cannot be associated. Possible
reasons are:
The statement references a file whose description is incompatible with the phrase.
A READ statement specifies the NEXT phrase and the exception phrase is INVALID KEY or
NOT INVALID KEY.
A READ statement does not specify the NEXT phrase and the exception phrase is AT END
or NOT AT END.
260 (Error)
Improper context for exception phrase
Cause
There is no preceding statement with which the exception phrase can be associated.
261 (Error)
Improper context for ELSE phrase
Cause
There is no preceding statement with which the ELSE phrase can be associated.
262 (Error)
Improper context for WHEN phrase
Cause
There is no preceding statement with which the WHEN phrase can be associated.
263 (Error)
Improper context for scope delimiter
Cause
There is no preceding statement with which the explicit scope delimiter can be associated.
264 (Error)
Missing AT END phrase
Cause
A RETURN statement does not have an associated AT END phrase.
265 (Error)
Missing WHEN phrase
Cause
A preceding EVALUATE or SEARCH statement does not include a WHEN phrase.
266 (Error)
Missing scope delimiter
Cause
A statement appears in a context that requires an explicit scope delimiter, but the appropriate
scope delimiter is not specified.
267 (Error)
Improper context for EXIT or empty GO TO statement
1144 Compiler Diagnostic Messages