Informix Error -2015: An open comment symbol, {, was found inside an already open comment on line line, character column. This could be due to a failure to close the previously opened comment, which was begun on line line, character column.

Reasons / Common Causes

-2015 fires when a form specification contains a nested { comment-open symbol inside a comment that's already open — per the official guidance, this is typically because an earlier comment was never closed, and a later, unrelated { gets misread as illegally nested inside it.

1. A previously opened comment never closed, per the official guidance — the direct, named cause; a later legitimate { (comment or otherwise) then falls inside the still-open one.

Solutions / Resolution

1. Review all comments in the form specification to ensure each opening brace has a corresponding closing brace, per the official guidance.
2. Use the line/character positions given in the message for both the new { and the earlier, still-open comment to locate the actual unclosed comment.

Examples

An unclosed earlier comment

{ This is the first comment
ATTRIBUTES
  order_id = order_id; { a second comment, but the first was never closed }
-- -2015: the second { falls inside the still-open first comment

Corrected

{ This is the first comment }
ATTRIBUTES
  order_id = order_id; { a second comment, properly separated }

Diagnostic Checks

1. Use the reported line/character positions for both the new { and the earlier open comment to locate the missing }.

Related Errors / Related Topics

• -2016 — "A comment has been opened, but not closed." A related comment-syntax error, for a comment left open at the end of the specification rather than one nested inside another.

An earlier comment was never closed — use the reported positions to find and close it.