Dynamics crm 2011 Dynamics接头和Dynamics ax 2009错误

其中一张地图已停止工作。我试图删除映射并从测试环境中恢复映射，但仍然失败。错误代码为：

[AX Customer to Account] has encountered an error. Processing will be aborted. Object reference not set to an instance of an object.
    --- Exception Dump --- 
    Caught Exception: Object reference not set to an instance of an object.
    Stack trace:
   at Microsoft.Dynamics.Integration.Adapters.Ax50.CustomerObjectProvider.ReadObjectKeys(DateTime modifiedDate)
   at Microsoft.Dynamics.Integration.AdapterAbstractionLayer.MixedObjectProviderProxy.ReadObjectKeys(DateTime modifiedDate)
   at Microsoft.Dynamics.Integration.Service.MapThread.ProcessReads()

WARNING TID:50 [2017-01-25T08:08:13.9049407+02:00]: An unrecognized exception was thrown [Microsoft.Dynamics.Integration.Adapters.Ax50::0x80004003].
INFO TID:29 [2017-01-25T08:08:13.9361903+02:00]: [AX Customer to Account] has failed. 0 record(s) have been written. 0 record(s) have been deleted. 0 record(s) have failed. 0 record(s)

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你知道哪里出了问题吗？

尝试同步数据库并重新启动AX AOS。 我找到了一些关于您的问题的参考资料：