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

Cause
An EXIT or GO TO statement that does not specify a procedure-name is not the only statement
in its sentence, as it must be.
268 (Error)
Improper context for NEXT SENTENCE
Cause
NEXT SENTENCE is neither in an IF or SEARCH statement nor a replacement for an
imperative-statement.
269 (Error)
Prior statement must be last in its sequence
Cause
The prior statement appears in a sequence of statements, but is not the last one in the sequence,
as it must be.
270 (Error)
Expected integer numeric literal
Cause
One of:
Only an integer numeric literal can appear in this context.
When a literal appears in this context, it must be an integer numeric literal.
271 (Error)
Undefined object reference
Cause
The reference cannot be resolved to any object that the current source program can access.
(Check the spelling of the object name and verify that all qualifiers are correct and in the proper
order.)
272 (Error)
Improper context for special register
Cause
Usually, a special register has been used as a receiving operand, which is not allowed.
273 (Error)
Improper context for debugging special register
Cause
References to the special register DEBUG-ITEM or any of its subordinates are not in a debugging
procedure in the Declaratives Portion of the Procedure Division, as they must be.
274 (Error)
Expected data item
Cause
The specified operand cannot appear in this context. (A data item with appropriate attributes
would be acceptable here. Other types of operands, such as literals, might also be acceptable.)
Message List 1145