https://community.esri.com/t5/arcgis-rest-apis-and-services-questions/field-calculate-status-returning-error-400-quot/m-p/1056646#M3841 <P>I've built an application that uses the calculate method asynchronously on an ArcGIS Online feature service.&nbsp; Sporadically, I get an error 400: "Acquiring data task lock failed".&nbsp; I can't find any information on what might be causing this error or any potential work arounds.</P><P>Has anyone seen this error before? And are there any known work arounds?</P><P>The calculate does work and will calculate records based on the provided where clause until the task lock error occurs.&nbsp; After the error occurs, no further records are calculated.</P> Tue, 11 May 2021 13:16:03 GMT MGD 2021-05-11T13:16:03Z https://community.esri.com/t5/arcgis-rest-apis-and-services-questions/field-calculate-status-returning-error-400-quot/m-p/1056646#M3841 <P>I've built an application that uses the calculate method asynchronously on an ArcGIS Online feature service.&nbsp; Sporadically, I get an error 400: "Acquiring data task lock failed".&nbsp; I can't find any information on what might be causing this error or any potential work arounds.</P><P>Has anyone seen this error before? And are there any known work arounds?</P><P>The calculate does work and will calculate records based on the provided where clause until the task lock error occurs.&nbsp; After the error occurs, no further records are calculated.</P> Tue, 11 May 2021 13:16:03 GMT https://community.esri.com/t5/arcgis-rest-apis-and-services-questions/field-calculate-status-returning-error-400-quot/m-p/1056646#M3841 MGD 2021-05-11T13:16:03Z