Support compression configuration

**Problem**
When working with validation, 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 names no files, tests, or entry points. Start by locating the validation and error-handling path in the repository, then determine how failures are currently surfaced. Done means validation errors are more descriptive and the behavior is covered by appropriate tests.

Written by the indexing model from the issue text.