Error about using a concatenated calculated column in a SSAS Tabular model

Hi,
in a my tabular model I've added in a dimension table a calculated column concatenating a code and a description. The code is used to create a relation between a fact table and this dimension table.
When I try to use the tabular model inside Excel and select the concatenated column as a filter I've this error message:
I've tried to recalculate some times the tabular database after the deployment of the model changes and I've tried to run a full process of the entire database but any results.
Any suggests to me in order to solve this issue, please?
Thanks

Hi, I've solved. The concatenate formula was with "+" operator and not "&".
But during the column creation I've any errors also if the model in SSDT was empty.
Bye

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