Outlook REST API错误:ErrorToomanyObject打开

Outlook REST API错误:ErrorToomanyObject打开,outlook,office365,outlook-restapi,Outlook,Office365,Outlook Restapi,我在同步邮件时收到此错误: "code": "ErrorTooManyObjectsOpened", "message": "Too many concurrent connections opened., Cannot open mailbox /o=ExchangeLabs /ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients 仅供参考,并行调用getAttachments()会导致超过429速率限制的错误。

我在同步邮件时收到此错误:

"code": "ErrorTooManyObjectsOpened",

"message": "Too many concurrent connections opened., 
Cannot open mailbox /o=ExchangeLabs
/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients

仅供参考,并行调用getAttachments()会导致超过429速率限制的错误。我可以按系列获取附件,但是否有更高性能的方法?