FileMaker Reference

Updated for FileMaker 26 with new error codes, refreshed Server CLI content, and a full Scripting Reference for all current script steps.

FileMaker Developer Reference is a practical lookup and learning tool for FileMaker developers.

Quickly search FileMaker error codes, FileMaker Server command-line commands, and FileMaker script steps in one convenient reference app. Whether you are troubleshooting a client system, checking a server command, or learning what a script step does, this app is designed to help you find answers fast.

This version has been updated for FileMaker 26 with expanded error-code coverage, refreshed FileMaker Server command-line reference content, and a brand-new FileMaker Scripting Reference.

The FileMaker Errors section includes clearer explanations, practical troubleshooting guidance, version notes, and coverage for newer FileMaker 26/current error areas including AI, semantic search, RAG, Data API, HTTP, SSL, JSON, container, and licensing-related errors.

The FileMaker Server Command Line Reference helps developers and server administrators quickly look up fmsadmin commands, usage notes, and server-management guidance.

The new FileMaker Scripting Reference covers all current FileMaker script steps, with explanations written not only as a reference but also as a tutorial. Each step includes what it does, why a developer would use it, available options, example formats, real-world examples, developer notes, and troubleshooting guidance.

Built for working FileMaker developers, consultants, administrators, and learners, FileMaker Developer Reference is intended to be the kind of tool you keep nearby while building, debugging, maintaining, and supporting FileMaker systems.