# 当 base64 包含 \`+\`（由同步字段中的 \`~\` 触发）时，服务端 sync\_sso 会拒绝有效负载并返回 422 “登录错误”

**URL:** <https://meta.discourse.org/t/server-side-sync-sso-rejects-valid-payloads-with-422-login-error-when-the-base64-contains-a-triggered-by-in-synced-fields/407426>\
**Category:** Bug\
**Tags:** sso, fixed\
**Created:** [2026年七月13日 07:24 UTC](https://meta.discourse.org/t/server-side-sync-sso-rejects-valid-payloads-with-422-login-error-when-the-base64-contains-a-triggered-by-in-synced-fields/407426 "2026-07-13T07:24:45Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![sweetbeems](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@sweetbeems](https://meta.discourse.org/u/sweetbeems)\
**Post date:** [2026年七月27日 04:41 UTC](https://meta.discourse.org/t/server-side-sync-sso-rejects-valid-payloads-with-422-login-error-when-the-base64-contains-a-triggered-by-in-synced-fields/407426/5 "2026-07-27T04:41:06Z")

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非常感谢 @zogstrip !!

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