2946463 - Error: "The model was updated. Please save Data Action again." in Data Action in SAP Analytics Cloud (SAC) when adding hierarchy to a dimension - 2020.15.0

After adding an hierarchy in a dimension, all data actions on several models using that dimension are invalid. The user has to go in each one of them to re-save them. 
In each data action the error message appears: "The model was updated. Please save Data Action again."

SAP Analytics Cloud

1. Add hierarchy
2. Save model
3. Go to data actions

"The model was updated. Please save the data action again." Error message is shown as following case:

When the structure or members of the model used in the data action have changed, it is visible when the data action is opened in the designer without the latest information being reflected.

1. Example 1. After changing the default hierarchy / member information, when the related script is outdated with the changed information.
2. Example 2. After adding/deleting dimension property information, when the related script is outdated with the changed information. 

If there are some changes, such as adding a hierarchy to a dimension, you need to update all Data Actions with the new dimension information because the Data Actions were built based on the dimension information. There is no option to automatically update related Data Actions when the model changes.

Workaround:

Export and import only the Data Actions of the model.

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