I enabled the Native blob soft delete feature in the Azure AI Search datasource (Azure Blob Storage kind). I enabled also soft delete in the ADLS. When I try to verify it, I see the file hasn’t been deleted. After some additional research I found in the documentation that “Document keys for the documents in your index must be mapped to either be a blob property or blob metadata, such as “metadata_storage_path”.

Ok, but when I try to map the metadata_storage_path to the document key I get an error:
“Keys can only contain letters, digits, underscore (_), dash (-), or equal sign (=). ”
How can I map the metadata_storage_path to the key as written in the documentation?? Path always contains special characters.