https://community.developer.cybersource.com/t5/Integration-and-Testing/E00007-Sandbox-credentials-become-invalid/m-p/95429#M58963 <P>Environment: Sandbox (apitest.authorize.net)<BR />Error: [E00007] User authentication failed due to invalid authentication values</P><P>Our team has different sandbox accounts (these are not shared — every person and every dev server uses its own API Login ID / Transaction Key). At some point all of these independent accounts started returning E00007 at roughly the same time.</P><P>Symptoms (per account)<BR />- When we generate a new API Login ID / Transaction Key in the Merchant Interface, the credentials work for a while but only for several hours.<BR />- After that they start returning E00007 again, without us changing anything on our side.<BR />- Regenerating the Transaction Key fixes it temporarily, then it breaks again — consistently, no matter how many times we regenerate.<BR />- Right after regeneration a test transaction succeeds, so it is not a typo or a copy/paste issue.<BR />- Everything works fine on production accounts.&nbsp;</P><P>What we've already checked<BR />- Credentials are copied exactly (no whitespace), and we point at the sandbox endpoint (apitest.authorize.net), not production.<BR />- The problem appears on multiple, unrelated sandbox accounts simultaneously, which is why we don't think it's an issue with one specific account.<BR /><BR />Is there any known sandbox-wide issue or recent change that would invalidate API credentials across multiple independent accounts at once?<BR />Or maybe is there any account-status condition that can auto-invalidate keys for newly created/regenerated sandbox accounts?</P> Thu, 18 Jun 2026 09:49:27 GMT mmedvedev2 2026-06-18T09:49:27Z https://community.developer.cybersource.com/t5/Integration-and-Testing/E00007-Sandbox-credentials-become-invalid/m-p/95429#M58963 <P>Environment: Sandbox (apitest.authorize.net)<BR />Error: [E00007] User authentication failed due to invalid authentication values</P><P>Our team has different sandbox accounts (these are not shared — every person and every dev server uses its own API Login ID / Transaction Key). At some point all of these independent accounts started returning E00007 at roughly the same time.</P><P>Symptoms (per account)<BR />- When we generate a new API Login ID / Transaction Key in the Merchant Interface, the credentials work for a while but only for several hours.<BR />- After that they start returning E00007 again, without us changing anything on our side.<BR />- Regenerating the Transaction Key fixes it temporarily, then it breaks again — consistently, no matter how many times we regenerate.<BR />- Right after regeneration a test transaction succeeds, so it is not a typo or a copy/paste issue.<BR />- Everything works fine on production accounts.&nbsp;</P><P>What we've already checked<BR />- Credentials are copied exactly (no whitespace), and we point at the sandbox endpoint (apitest.authorize.net), not production.<BR />- The problem appears on multiple, unrelated sandbox accounts simultaneously, which is why we don't think it's an issue with one specific account.<BR /><BR />Is there any known sandbox-wide issue or recent change that would invalidate API credentials across multiple independent accounts at once?<BR />Or maybe is there any account-status condition that can auto-invalidate keys for newly created/regenerated sandbox accounts?</P> Thu, 18 Jun 2026 09:49:27 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/E00007-Sandbox-credentials-become-invalid/m-p/95429#M58963 mmedvedev2 2026-06-18T09:49:27Z