This item has been identified as an outstanding known issue. A workaround is provided until the issue is officially fixed.
An attempted ALM sync fails and the following error is received:
"An internal error occurred while preparing the structural changes
for synchronization. Reason for error: To serve as an access driver,
a summary method other than None must be present on any line item
dimensions that don't match those of the target module or line item."
This error is still received even if no summary line items are set to 'None'. This issue can manifest itself in a few different ways, but they all involve the Applies To values for the DCA driver line items and modules.
This setup below will produce the error when syncing, the list subset is required, and notice the Applies To configuration:
There are variations with the Applies To where the sync works and also when it does not:
To work around this issue, please follow these steps:
If this workaround is not suitable in your use case, please contact Support at support@anaplan.com.
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Internal Reference: ALM-1361