Invalid string in example record. Query not issued.

Question

I've tried to google this but didn't come up with anything and tried searching this forum but was not returning exact string.
Does anyone know what this means?
The form is based on a master (which is a view) and detail records (which is a table)
Forms [32 Bit] Version 10.1.2.3.0 (Production)
Oracle Database 10g Enterprise Edition Release 10.1.0.3.0 - Production
With the Partitioning and Data Mining options

Answer 1

if you call the enter_query build-in and type a value in one of the database items,
in the subsequent execute_query forms searches for that value in the assosiated database-column.
This entered value/s forms call a example record
in hope, your block don't have too much items, try the following code in your trigger that call the execute_query: execute_query;
if
  form_failure
then
  message ( get_block_property ( :system.trigger_block, last_query ) );
  message ( ' ');
end if;