{"id":803,"date":"2025-09-11T09:09:51","date_gmt":"2025-09-11T09:09:51","guid":{"rendered":"https:\/\/smppcenter.com\/kb\/?p=803"},"modified":"2025-09-11T09:09:52","modified_gmt":"2025-09-11T09:09:52","slug":"why-do-new-users-get-no-valid-phone-numbers-found-error-in-sandbox","status":"publish","type":"post","link":"https:\/\/smppcenter.com\/kb\/why-do-new-users-get-no-valid-phone-numbers-found-error-in-sandbox\/","title":{"rendered":"Why do new users get \u201cNo Valid Phone Numbers Found\u201d error in Sandbox?"},"content":{"rendered":"\n<p>This error usually occurs when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The user tries sending SMS from <strong>unregistered or non-whitelisted numbers<\/strong> in Sandbox mode.<\/li>\n\n\n\n<li>The message does not include a proper <strong>country code<\/strong> (e.g., +91 for India, +1 for USA).<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 See detailed guide here: <a href=\"https:\/\/smppcenter.com\/kb\/%e2%9d%8c-error-no-valid-phone-numbers-found-how-to-fix\/\">Why am I getting the error No Valid Phone Numbers Found on SMPP Center?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This error usually occurs when: \ud83d\udc49 See detailed guide here: Why am I getting the error No Valid Phone Numbers Found on SMPP Center?<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[],"class_list":["post-803","post","type-post","status-publish","format-standard","hentry","category-sandbox-settings"],"_links":{"self":[{"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/posts\/803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/comments?post=803"}],"version-history":[{"count":0,"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/posts\/803\/revisions"}],"wp:attachment":[{"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/media?parent=803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/categories?post=803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smppcenter.com\/kb\/wp-json\/wp\/v2\/tags?post=803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}