{"id":101,"date":"2026-10-12T06:11:35","date_gmt":"2026-10-12T06:11:35","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/2009\/01\/12\/potential-scm-problem-classes\/"},"modified":"2026-10-12T06:11:35","modified_gmt":"2026-10-12T06:11:35","slug":"potential-scm-problem-classes","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/potential-scm-problem-classes\/","title":{"rendered":"8 SCM Problem Classes and How to Control Them in Real Delivery Pipelines"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This guide explains the major classes of software configuration management (SCM) problems, why they happen, and how to control them in day-to-day engineering work. It is written for engineering managers, release managers, and senior developers who need reliable change control across code, documentation, and product releases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Originally published on 2009-01-12; fully revised and updated.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Source article: <a href=\"https:\/\/www.devopsschool.com\/blog\/potential-scm-problem-classes\/\">What are the potential SCM problem Classes in the process?<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.devopsschool.com\/blog\/wp-content\/uploads\/2009\/01\/scm-problem.png\" alt=\"scm-potential-problem-classes\" width=\"600\" height=\"400\" \/><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SCM problem classes at a glance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The original post identifies eight recurring problem classes. These are still useful because they describe failure patterns that appear in most software organizations, regardless of tooling.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Problem class<\/th><th>Typical risk without SCM<\/th><th>Practical SCM control<\/th><\/tr><\/thead><tbody><tr><td>Multiple developer syndrome<\/td><td>Overwritten work and conflicting edits<\/td><td>Version control, branching strategy, merge review, protected main branch<\/td><\/tr><tr><td>Multiple releases<\/td><td>Hotfixes applied to one release but missed in others<\/td><td>Release branches, patch tracking, release tagging, backport policy<\/td><\/tr><tr><td>Product family<\/td><td>Duplicated assets and inconsistent platform variants<\/td><td>Shared baselines plus variant-specific configuration items<\/td><\/tr><tr><td>Requirements change<\/td><td>Scope drift and unclear feature ownership<\/td><td>Formal change requests mapped to features and releases<\/td><\/tr><tr><td>Schedule change<\/td><td>Unrealistic commitments and hidden dependencies<\/td><td>Approved change set tied to release plan and effort history<\/td><\/tr><tr><td>Software changes<\/td><td>Regressions with no safe rollback path<\/td><td>Commit history, baseline tags, reproducible build and rollback process<\/td><\/tr><tr><td>Staff changes<\/td><td>Loss of process knowledge and delivery continuity<\/td><td>Documented workflow, audit trails, onboarding playbooks<\/td><\/tr><tr><td>System and user documentation change<\/td><td>Code and documentation drift<\/td><td>Docs versioned with product, impact analysis for external dependency changes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why these classes compound quickly<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These issues are rarely isolated. A requirement change can trigger schedule shifts, software changes, release branching decisions, and documentation updates. Without a single SCM process, teams end up solving each issue ad hoc.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Concurrency problems<\/strong> start as merge conflicts but become quality risks when unmanaged changes reach production.<\/li><li><strong>Release problems<\/strong> start as branch divergence and become customer-impacting inconsistency across supported versions.<\/li><li><strong>Governance problems<\/strong> start as unclear ownership and become slow, disputed decision-making about what ships next.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Change-control workflow with a configuration control board<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The original article emphasizes the configuration control board (CCB) as the core control point. In practice, the CCB (or equivalent governance group) provides traceable decisions on bug fixes, enhancements, and release scope.<\/p>\n\n\n\n<pre class=\"mermaid\">\nflowchart TD\n    A[Change request submitted] --> B[SCM logs and classifies change]\n    B --> C[Impact analysis across code docs and releases]\n    C --> D{CCB decision}\n    D -- Approve --> E[Assign owners and target release]\n    D -- Defer or reject --> F[Record rationale and notify requester]\n    E --> G[Implement and review change]\n    G --> H[Test and verify baselines]\n    H --> I[Tag release and update status accounting]\n    I --> J[Publish release notes and CCB minutes]\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">SCM staffing functions and required skills<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The source groups SCM capability into four functions: identification, control, auditing, and status accounting. The table below keeps those categories and translates them into practical outputs.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>SCM function<\/th><th>Core objective<\/th><th>Key abilities from the source<\/th><th>Typical outputs<\/th><\/tr><\/thead><tbody><tr><td>Identification<\/td><td>Define what must be controlled<\/td><td>Partitioning, relationship mapping, technical familiarity, systems orientation<\/td><td>Configuration item list, baseline definitions, naming conventions<\/td><\/tr><tr><td>Control<\/td><td>Decide and govern change<\/td><td>Benefit-cost evaluation, balanced system viewpoint, change engineering awareness<\/td><td>CCB decisions, change approvals, release scope decisions<\/td><\/tr><tr><td>Auditing<\/td><td>Verify integrity and completeness<\/td><td>Attention to detail, congruence checks, ability to detect missing elements<\/td><td>Audit reports, compliance findings, corrective action items<\/td><\/tr><tr><td>Status accounting<\/td><td>Maintain traceability records<\/td><td>Structured note-taking, data organization, technical familiarity<\/td><td>Change logs, baseline history, CCB minutes, release status reports<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Example artifacts and commands<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The following examples are implementation templates you can adapt to your tooling.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Example CCB decision record (YAML)<\/h3>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript language-yaml\">change_id: CR<span class=\"hljs-number\">-2026<\/span><span class=\"hljs-number\">-0142<\/span>\n<span class=\"hljs-attr\">title<\/span>: Add session timeout setting\n<span class=\"hljs-attr\">requester<\/span>: Product Management\n<span class=\"hljs-attr\">configuration_items<\/span>:\n  - api-gateway\n  - user-documentation\n<span class=\"hljs-attr\">affected_releases<\/span>:\n  - <span class=\"hljs-string\">\"2.4\"<\/span>\n  - <span class=\"hljs-string\">\"2.5\"<\/span>\n<span class=\"hljs-attr\">impact_summary<\/span>:\n  technical: <span class=\"hljs-string\">\"Requires API and UI updates\"<\/span>\n  <span class=\"hljs-attr\">test<\/span>: <span class=\"hljs-string\">\"Regression on login and session renewal\"<\/span>\n<span class=\"hljs-attr\">ccb_decision<\/span>: approved\n<span class=\"hljs-attr\">target_release<\/span>: <span class=\"hljs-string\">\"2.5.1\"<\/span>\n<span class=\"hljs-attr\">actions<\/span>:\n  - owner: backend-team\n    <span class=\"hljs-attr\">due_date<\/span>: <span class=\"hljs-number\">2026<\/span><span class=\"hljs-number\">-10<\/span><span class=\"hljs-number\">-30<\/span>\n<span class=\"hljs-attr\">status_accounting<\/span>:\n  meeting_id: CCB<span class=\"hljs-number\">-2026<\/span><span class=\"hljs-number\">-10<\/span><span class=\"hljs-number\">-12<\/span>\n  <span class=\"hljs-attr\">minutes_ref<\/span>: internal-wiki\/ccb\/CCB<span class=\"hljs-number\">-2026<\/span><span class=\"hljs-number\">-10<\/span><span class=\"hljs-number\">-12<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading\">Example Git flow for a hotfix across multiple releases<\/h3>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Apply the same approved fix to supported release branches<\/span>\nHOTFIX_SHA=abc1234\n\ngit checkout release\/<span class=\"hljs-number\">2.4<\/span>\ngit cherry-pick $HOTFIX_SHA\ngit tag -a v2<span class=\"hljs-number\">.4<\/span><span class=\"hljs-number\">.9<\/span> -m <span class=\"hljs-string\">\"Hotfix: session renewal bug\"<\/span>\ngit push origin release\/<span class=\"hljs-number\">2.4<\/span> --tags\n\ngit checkout release\/<span class=\"hljs-number\">2.5<\/span>\ngit cherry-pick $HOTFIX_SHA\ngit tag -a v2<span class=\"hljs-number\">.5<\/span><span class=\"hljs-number\">.3<\/span> -m <span class=\"hljs-string\">\"Hotfix: session renewal bug\"<\/span>\ngit push origin release\/<span class=\"hljs-number\">2.5<\/span> --tags<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p class=\"wp-block-paragraph\"><em>Note:<\/em> Branch names, tagging format, and approval gates should follow your organization\u2019s release policy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Minimum SCMP sections to document<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>SCM organization and responsibilities<\/li><li>Configuration item identification and baselines<\/li><li>Change control process and decision authority<\/li><li>Status accounting records and reporting cadence<\/li><li>Audit and review procedures<\/li><li>Tools, methods, and standards used<\/li><li>Supplier or third-party component control<\/li><li>Retention policy for SCM records and evidence<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Best practices<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Treat code, build scripts, and documentation as versioned configuration items.<\/li><li>Use explicit release branches and tags for every supported line.<\/li><li>Make CCB decisions visible and searchable, not buried in email threads.<\/li><li>Require traceability from change request to commit, test evidence, and release note.<\/li><li>Review SCM metrics regularly (open changes, aging approvals, audit findings) to catch process drift early.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Software configuration management problems are usually predictable: concurrent edits, release drift, requirement churn, and weak governance. This guide maps the classic SCM problem classes to practical controls, staffing roles, and a clear CCB-driven workflow.<\/p>\n","protected":false},"author":1,"featured_media":3943,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[2],"tags":[422,2867,255,2862,2863,2870,2866,351,2864,397,2871,2873,2872,2865,2874,2869,2868,2435,2875],"class_list":["post-101","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised","tag-classes","tag-classes-of-potential-problems-in-scm-process","tag-issues","tag-potential","tag-potential-problems","tag-potential-scm-considerations","tag-potential-scm-problem-classes","tag-problem","tag-problem-classes","tag-scm","tag-scm-considerations","tag-scm-issues","tag-scm-potential-considerations","tag-scm-potential-problems","tag-scm-problems","tag-scm-process-potential-issues","tag-scm-process-potential-problems","tag-software-configuration-management","tag-software-configuration-management-potential-problem-classes"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=101"}],"version-history":[{"count":3,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/101\/revisions"}],"predecessor-version":[{"id":78926,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/101\/revisions\/78926"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/3943"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}