Some schema elements have no mapping defined

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Hello  I am refering to the following course (4.2.1-4.2.2) to create  JSON Structure then import mapping. However, i got 3 errors as below. I  definiently followed  all steps  as the course. Can someone advise me why i get this error and how to resolve it ? Thanks. Mendix Academy - 4.2.1 Create JSON Import   Error message: Some schema elements have no mapping defined No entity selected.
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1 answers
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Hey REI,

for import mappings, you have to define some entities, so that the external data can be mapped into them.

So either select an entity by double clicking on the department and employee objects or you can select the option map automatically, if there is no entity to hold their data.

Hope it helps!

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