Changelogs

Aerion API Release Notes

Release notes for the Aerion API encompass functional adjustments to API behavior, new additions, and documentation adjustments. Features mentioned in this changelog are not necessarily available via the web UI, or they may be restricted to the Early Access preview experience.

v2.1.7 — 2026-07-30

Time entries now expose a settable, filterable importId field linking an entry to its source record from an external import.

v2.1.6 — 2026-07-27

Adds the option to remove upcoming planner assignments when completing or archiving a project or client, or when unassigning a user from a project.
Archiving a client or super project will no longer mark child projects as completed; pass complete=true to also complete them.
Reactivating a project now also reactivates its parent project and client.

v2.1.5 — 2026-07-24

Fixes an issue where overtime for users with flexible working time could accumulate/decrease when worktime was tracked by these users. In practice, this was primarily an issue for users that were subsequently changed to use fixed hours.

v2.1.4 — 2026-07-23

Fixes a field permission issue that led to account-specific overrides not being readable by all users. In practice, this was resulting in the max number of Project Leads property not being available to PMs, and the restriction not being enforced.
Refreshed public holiday data to the latest available, adding support for several more countries, including India, Kazakhstan, Sri Lanka, Pakistan, Saudi Arabia, and Thailand.

v2.1.3 — 2026-07-21

Fixes a server error when submitting time entries for periods where the user does not have an active employment entry.
Deleting a super project now correctly checks the entire cascade chain of its sub-projects, preventing deletion of the super project if any of its sub-projects cannot be deleted, and cleaning up after the sub-projects that are successfully deleted.

v2.1.2 — 2026-07-17

Re-adds the isTeamLead property to Team Assignments - it grants no additional permissions, but can be used for display, filtering, and exporting.
Adjusted the HTTP status code of errors returned from the save-worktime feed; error body remains the same.

v2.1.1 — 2026-07-13

Relaxed time entry creation rules for projects on days where the user has already submitted time. Time entry creation is now allowed regardless of other entries' submission or approval status, up until the project day for the respective project is locked (or time-based locking is in place).
Skill Management is now documented in the API reference: skills, skill sets, skill categories, and user skill assignments.

v2.1.0 — 2026-06-18

Overhauled error response body - responses now carry stable codes plus localized title and description payloads. Consumers can switch on the error code and surface the localized message directly. This is a backwards-compatible change; existing error strings remain at their old location in the response payload and are supplemented with additional information.
Fixes an issue that prevented the desktop client startup feed from loading when a task assignment existed for a deleted task

v2.0.2 — 2026-05-29

Fixes a 504 that should have been a 400 when posting PlannerAssignments with an invalid post body

v2.0.1 — 2026-05-18

New fields added to invoices (and planned invoices) to support internal/external designation and effective date.

v2.0.0 — 2026-05-09

Despite the major version bump, this is a non-breaking, backwards-compatible change; URLs and paths remain on the /v1/ namespace.

Overhauled OpenAPI spec from the ground up, includes full/fixed schemas, model attribute descriptions, analytics-feed documentation, sorting hints, usage notes
All routes in OpenAPI spec switched to kebab-case names (legacy URLs are aliased and include a deprecation header)
Fixed a race condition that could create duplicate work time entries under concurrent writes.

v1.23.12 — 2026-05-02

The default Project Manager role for new accounts now grants Planner View permission by default.

v1.23.11 — 2026-04-23

New skill-assignment permissions added to Role, for more fine-grained access

v1.23.10 — 2026-02-18

Adds deal probability and deal amount fields to Projects, and introduces Deal project state
Fixes an issue in the SevDesk integration when importing multiple projects with the same name

v1.23.9 — 2026-02-13

Improves performance of locking and unlocking project weeks, especially when many time entries are included.
Improves load time of overtime-related items on the individual User Analytics page and on the User Edit page.
Fixes an issue on Time Entry Analytics where filters for either References or Super Projects were not accounted for when performing bulk lock/unlock operations via the Lock icon in the table header.

v1.23.8 — 2026-01-23

Fixes an issue where not-yet-added-to-an-invoice recurring expenses would count as effort in some project analytics displays.
Fixes an issue where the "Total" label at the end of PDF Time Entry exports could overlap totals values depending on the order of columns.
Setup for HRIS Worktime Sync.
Adds projectLead property to UserAssignment.
Adds canArchiveOwnProjects to Role.

v1.23.7 — 2025-12-03

Fix time entry resubmit link in emails.

Web (Early Access)MCP

v2.1.6 — 2026-07-27

Adds the option to remove upcoming planner assignments when completing or archiving a project or client, or when unassigning a user from a project.

Archiving a client or super project will no longer mark child projects as completed; pass complete=true to also complete them.

Reactivating a project now also reactivates its parent project and client.

v2.1.4 — 2026-07-23

Fixes a field permission issue that led to account-specific overrides not being readable by all users. In practice, this was resulting in the max number of Project Leads property not being available to PMs, and the restriction not being enforced.

Refreshed public holiday data to the latest available, adding support for several more countries, including India, Kazakhstan, Sri Lanka, Pakistan, Saudi Arabia, and Thailand.

v2.1.3 — 2026-07-21

Fixes a server error when submitting time entries for periods where the user does not have an active employment entry.

Deleting a super project now correctly checks the entire cascade chain of its sub-projects, preventing deletion of the super project if any of its sub-projects cannot be deleted, and cleaning up after the sub-projects that are successfully deleted.

v2.1.1 — 2026-07-13

Relaxed time entry creation rules for projects on days where the user has already submitted time. Time entry creation is now allowed regardless of other entries' submission or approval status, up until the project day for the respective project is locked (or time-based locking is in place).

Skill Management is now documented in the API reference: skills, skill sets, skill categories, and user skill assignments.

v2.1.0 — 2026-06-18

Overhauled error response body - responses now carry stable codes plus localized title and description payloads. Consumers can switch on the error code and surface the localized message directly. This is a backwards-compatible change; existing error strings remain at their old location in the response payload and are supplemented with additional information.

Fixes an issue that prevented the desktop client startup feed from loading when a task assignment existed for a deleted task

v2.0.0 — 2026-05-09

Despite the major version bump, this is a non-breaking, backwards-compatible change; URLs and paths remain on the /v1/ namespace.

Overhauled OpenAPI spec from the ground up, includes full/fixed schemas, model attribute descriptions, analytics-feed documentation, sorting hints, usage notes

All routes in OpenAPI spec switched to kebab-case names (legacy URLs are aliased and include a deprecation header)

Fixed a race condition that could create duplicate work time entries under concurrent writes.

v1.23.9 — 2026-02-13

Improves performance of locking and unlocking project weeks, especially when many time entries are included.

Improves load time of overtime-related items on the individual User Analytics page and on the User Edit page.

Fixes an issue on Time Entry Analytics where filters for either References or Super Projects were not accounted for when performing bulk lock/unlock operations via the Lock icon in the table header.

v1.23.8 — 2026-01-23

Fixes an issue where not-yet-added-to-an-invoice recurring expenses would count as effort in some project analytics displays.

Fixes an issue where the "Total" label at the end of PDF Time Entry exports could overlap totals values depending on the order of columns.

Setup for HRIS Worktime Sync.

Adds projectLead property to UserAssignment.

Adds canArchiveOwnProjects to Role.