Added doc for ledger entry entity for Export API.

[prazi]

Summary

We added LedgerEntry entity and exposed it via Export API, but we never update documentation related to that entity.
Adding it as part of the Export API now, so partners understand that entity.
https://mews.atlassian.net/browse/FINTECH-17023

Checklist

• Documentation follows the contribution guidelines
• Changelog accurately describes all changes
• All hyperlinks tested
• SUMMARY.md updated if new pages added

API

• Changelog highlights the affected endpoints or operations
• Changelog highlights any deprecations
• Deprecation Table updated if any deprecations

[Copilot]

Pull request overview

Updates Connector API reference docs to include the LedgerEntry entity in the Export API and documents the associated export filters, with a corresponding changelog entry so partners can discover the addition.

Changes:

• Extended Export API filter documentation with LedgerEntryFilters and its Posting date interval.
• Added a Ledger entry entity schema and related enums to exports.md.
• Added a 2026-04-13 changelog entry describing the Export API documentation update.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
connector-api/operations/exports.md	Documents LedgerEntryFilters and adds the Ledger entry entity + enums in Export API docs.
connector-api/changelog/README.md	Adds a dated changelog entry describing the Export API LedgerEntry documentation update.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[jonas-paul]

@prazi The operations part of the docs are auto-generated, so we should find a better place to describe this export. It's a bit tricky since ledger entries are not exposed via the API. Maybe it could be a part of exports contracts. @jnv Do you have any ideas?

[jnv]

@prazi The operations part of the docs are auto-generated, so we should find a better place to describe this export. It's a bit tricky since ledger entries are not exposed via the API. Maybe it could be a part of exports contracts. @jnv Do you have any ideas?

We've already discussed it, I will move the manually added part to a separate document.

[jonas-paul]

The changes to exports.md are missing.