This repository is SAP's official, community-driven collection of coding style guides, focused on ABAP development within the SAP ecosystem. The centerpiece is Clean ABAP (clean-abap/CleanABAP.md), a comprehensive adaptation of Robert C. Martin's Clean Code for the ABAP language, covering naming conventions, language constructs, variables, internal tables, conditions, classes, methods, error handling, comments, formatting, and testing - with each rule paired as good and anti-pattern code examples. A companion guide (abap-code-review/ABAPCodeReview.md) defines a pragmatic, checklist-based ABAP code-review process tied to the Clean ABAP rules. The repo is documentation-only; it is not a runnable application, service, or data pipeline. Its only executable surface is a GitHub Actions workflow (build.yml) that validates markdown links via markdown-link-check, plus an automated issue labeler. Content is organized as a single large primary document (~10,000+ lines) with modular deep-dive sub-sections (clean-abap/sub-sections/), a print-optimized cheat sheet, and full translations into eight languages (English, Chinese, German, Spanish, French, Japanese, Korean, Russian). The project is actively maintained - last commit April 2026, 79 open issues triaged through structured templates (propose new rule, clarification, adjust existing rule) - and uses a formal governance model requiring consensus and quarterly review for significant changes. The guides are opinionated by design and openly acknowledge tensions with legacy code, performance, and official SAP guidelines; enforcement is delegated to companion tools such as abaplint and code pal for ABAP. Primary drift risk is translation lag - several translations are based on English versions from 2019-2022 - and evolution of the ABAP language beyond the NetWeaver releases referenced in the text.