persistenceId

SBusinessDataNotFoundException: persistenceId of business data is null

Hi,
I have a problem with a new object I created in the BDM.
I created an object "Autorisation" and added 2 variables of this type in an existing object "MainModel".
In a form, I return a json array of Autorisation and in the task operation, I have a script to set the variable of the MainModel :

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