Add configuration options for export

**Problem**
When working with routes, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

The issue mentions routes, export configuration, and more descriptive error messages, but names no files, tests, or entry points. First locate the route and export-handling areas, then clarify which configuration options and error cases are required; done should include the specified options and detailed messages validated by tests.

Written by the indexing model from the issue text.