Hi. Make sure that you’re on the latest build of IC2 and that the API version number is 63.0 in your sfdx-project.json file and package.xml file if not already so. Please let me know if that doesn’t help.
Regards,
Scott Wells
Hmmmm…I just tried this in both a metadata format project and a source format project and both deployed with that attribute with no issues once I updated things to use API v63.0.
Let’s try the potentially easy “fix” first. Just in case something is hanging onto a stale cached API version number somewhere in memory, please restart the IDE process and see if the problem is still present. If so, can you please enable debug logging for both Metadata Deployment and Salesforce DX, reproduce the behavior, and email the resulting idea.log file to me for review?
Regards,
Scott Wells