I am getting a "FAIL" message back when executing pgr_createTopology on a particular table, but the reason is not obvious. Is there any way to know precisely why the function is failing? Perhaps some sort of pgRouting log?

1 Answer 1


There should be a message for each failure, but eventually one (or more) have been forgotten?

You could try do debug the problem by modifying the pgr_createTopology function, for example by adding more intermediate output to the pgsql function.

There is no pgRouting log, except the messages generated with raise notice.

  • These messages are coming up as notices, now I know what is wrong. Commented Apr 1, 2014 at 14:36

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