Add the issuer domain for EUSC#10493
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ashovlin
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Jul 16, 2026
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Issue #, if available:
Description of changes: AWS-EUSC SSO login failed on CLI 2.35.13+ because the EUSC issuer domain
identitycenter.amazonaws.euwas missing from the SSO start URL resolver allowlist. The resolver treated it as a vanity URL and attempted DNS resolution, which failed. PR #10465 added the EUSC portal suffix forms but not the issuer form. This adds it to_AWS_OWNED_EXACT.By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.