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 # Changelog

 Last update: 16.07.2026 

## 2026 R1

- deprecated OSL\_PROJECT\_DIR; added OSL\_PROJECT\_WORKING\_DIR and OSL\_PROJECT\_FILE\_DIR
- refreshed external documentation links (MOP Solver API, Ansys Product Help references, integration demo download)
- synced Integration Node data exchange KWARGs with XML (`reference_file_path` added; `reference_file` deprecated)
- updated `ScriptInterfaceVersion` description in configuration files topic
- restored Integration Node API anchor links
- corrected `reset_hid` incoming argument name and cross-reference
- clarified load return-value list wording on Integration Node topic
- fixed unclosed `execute_custom` code fence on Basic, Integration, and MOP Node topics (#1477589)

## 2025 R2

Added Interfaces and Customizations to developer portal.