{"id":6908,"date":"2017-05-26T00:00:00","date_gmt":"2017-05-25T16:00:00","guid":{"rendered":"https:\/\/www.fraudlabspro.com\/resources2\/tutorials\/sequence-of-execution-of-fraud-validation-rules\/"},"modified":"2026-07-22T12:07:43","modified_gmt":"2026-07-22T04:07:43","password":"","slug":"sequence-of-execution-of-fraud-validation-rules","status":"publish","type":"docs","link":"https:\/\/www.fraudlabspro.com\/resources\/tutorials\/sequence-of-execution-of-fraud-validation-rules\/","title":{"rendered":"How Is the Fraud Validation Sequence Executed?"},"content":{"rendered":"\n

FraudLabs Pro lets you configure multiple fraud validation rules, each with its own action, namely Approve<\/strong>, Manual Review<\/strong>, or Reject<\/strong>. When several rules are active, understanding the order in which they’re evaluated is key to predicting how a transaction will be flagged.<\/p>\n\n\n\n

Execution Logic<\/h2>\n\n\n\n

FraudLabs Pro uses a simple sequential checking<\/strong> model:<\/p>\n\n\n\n

    \n
  1. Rules are evaluated in order, starting from Rule #1 through to the last rule.<\/li>\n\n\n\n
  2. As soon as a rule matches, the checking process stops immediately<\/strong>, and the transaction is flagged with that rule’s defined action (Approve, Manual Review, or Reject).<\/li>\n\n\n\n
  3. If none of the rules match after the full sequence is checked, the transaction is automatically flagged as Approve<\/strong>.<\/li>\n<\/ol>\n\n\n\n

    In short: first match wins<\/strong>. The subsequent rules are never evaluated once a match is found.<\/p>\n\n\n\n

    Example Walkthrough<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    Assuming you created 3 validation rules for Free Email<\/strong>, Email in Blacklist<\/strong> and Anonymous Proxy<\/strong> as above. (Note: to ease the explanation, this tutorial will not display the exact rule name but a short representation)<\/em><\/p>\n\n\n\n

    Scenario 1: Free email address (e.g., a Yahoo account)<\/h3>\n\n\n\n

    Rule #1 matches immediately. Checking stops here, and the transaction is flagged as Manual Review<\/strong>. Rules #2 and #3 are never evaluated.<\/p>\n\n\n\n

    Scenario 2: Company email, but previously blacklisted<\/h3>\n\n\n\n

    Rule #1 doesn’t match (it’s not a free email), so checking proceeds. Rule #2 matches, checking stops, and the transaction is flagged as Reject<\/strong>. Rule #3 is never evaluated.<\/p>\n\n\n\n

    Scenario 3: Clean company email, no proxy detected<\/h3>\n\n\n\n

    None of the three rules match. The sequence completes with no match found, so the transaction is automatically flagged as Approve<\/strong>.<\/p>\n\n\n\n

    Key Takeaway<\/h2>\n\n\n\n

    Because the first matching rule determines the outcome, rule order matters<\/strong>. Placing stricter rules (e.g., Reject <\/strong>conditions) earlier in the sequence ensures they’re checked before more lenient rules that might otherwise catch the same transaction first.<\/p>\n\n\n\n

    \n\n\n\n

    Ready to start with FraudLabs Pro?<\/h2>\n\n\n\n

    Get Micro plan for free, you can quickly explore and integrate with our fraud prevention solution in minutes.<\/p>\n\n\n\n

    Sign Up Free<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    FraudLabs Pro lets you configure multiple fraud validation rules, each with its own action, namely Approve, Manual Review, or Reject. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"doc_category":[441],"doc_tag":[305,306,307,308,309,310,311,312,313,314],"class_list":["post-6908","docs","type-docs","status-publish","hentry","doc_category-fraud-rules-and-validation","doc_tag-fraud-detection","doc_tag-fraud-prevention","doc_tag-fraudlabspro","doc_tag-iovation","doc_tag-maxmind","doc_tag-reduce-chargebacks","doc_tag-riskified","doc_tag-sift-science","doc_tag-signifyd","doc_tag-whmcs"],"year_month":"2026-08","word_count":320,"total_views":"24","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Chris","author_nicename":"chris","author_url":"https:\/\/www.fraudlabspro.com\/resources\/author\/chris\/"},"doc_category_info":[{"term_name":"Fraud Rules & Validation","term_url":"https:\/\/www.fraudlabspro.com\/resources\/categories\/fraud-rules-and-validation\/"}],"doc_tag_info":[{"term_name":"fraud detection","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/fraud-detection\/"},{"term_name":"fraud prevention","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/fraud-prevention\/"},{"term_name":"fraudlabspro","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/fraudlabspro\/"},{"term_name":"iovation","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/iovation\/"},{"term_name":"maxmind","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/maxmind\/"},{"term_name":"reduce chargebacks","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/reduce-chargebacks\/"},{"term_name":"riskified","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/riskified\/"},{"term_name":"sift science","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/sift-science\/"},{"term_name":"signifyd","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/signifyd\/"},{"term_name":"whmcs","term_url":"https:\/\/www.fraudlabspro.com\/resources\/tutorials-tag\/whmcs\/"}],"yoast_head":"\nHow Is the Fraud Validation Sequence Executed? 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