Failed download sessions

You receive the following error message: "Microsoft. An error has occurred because the length of one or more DBO tables has been extended, so that truncation of data was required. Therefore, a truncation failure has occurred. Generate a support request. For best practices, see Enable custom Commerce Data Exchange synchronization via extension. These best practices include removing the extended data type EDT extension on the table field that is being edited and using the CDX extension table to store the long full value that is required.

If the value of this field is too high, download sessions might fail during high-usage times. After you complete this step, the job will set its status to Canceled and stop retrying itself. We recommend that you to read Commerce Data Exchange best practices.

If this issue occurs in a production environment, sign in to Microsoft Dynamics Lifecycle Services LCS , and create a request for immediate support. If the issue occurs in a non-production environment, create a support request. Create a support request, and specify whether it's acceptable to delete and reprovision the Commerce Scale Unit Cloud , or whether the Commerce Scale Unit must be maintained as it currently exists.

In both cases, downtime will be required. CDX or environment issues occur after you change the value of the Days transactions exist field in the functionality profile. If the Days transactions exist value is reduced by a large amount, one or more tables might become locked while purging occurs. Before you reduce the value by a large amount, we recommend that you generate a support request.

Microsoft Support can remove the data before the value is changed. In this way, the database impact of the change will be minimized. After you add multiple POS terminals, download sessions take a very long time, or there is overall Commerce headquarters slowness.

When you create a new Modern POS offline database and add it to the relevant channel database group, it inherits all existing download sessions since the last full database synchronization occurred.

Even at the best of times, the exceptional data generation that might occur can be too large and therefore affect performance. At the worst that is, busiest of times, it can severely impair the environment's performance.

We highly recommend that you have either a "dummy" channel database group that is, a group that isn't associated with any distribution schedule job that you assign to the newly generated terminals or a special offline profile where the Pause offline synchronization option is set to Yes. In this way, data generation can occur when it's required and when the system is most available to do it.

However, the system might pause multiple times as required. If it's too late to use this approach, create a support request. A channel data group can contain multiple channel databases. Create failed — The data package could not be created. Review the detailed error message for more information. After you have resolved the error, run the distribution schedule again. If the distribution schedule runs as part of a batch job, it is run again the next time that the batch job runs.

Download failed — The data package could not be downloaded. After you have resolved the error, Async Client tries the download again according to the retry interval. Apply failed — The data package could not be applied to the channel database. If there is a configuration issue, fix the issue, and wait for the next retry by Async Client. The number of rows in the database that are read from Microsoft Dynamics AX and sent to the channel. Use the Upload sessions form to view information about jobs that transfer data from channels to Microsoft Dynamics AX.

Upload failed — The data package could not be uploaded. After you have resolved the error, Async Client tries the upload again according to the retry interval. The number of rows in the database that are read from the channel database and sent to Microsoft Dynamics AX.

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