The Invalid Public Screen Block error is issued in the following situations:

You must set as public the Entity and/or Structure that belongs to the definition of the Record parameter.

You must edit the public screen block, select the input parameter and use entities and/or structures owned by the current eSpace.

Depending on your requirements, do one of the following: edit the link and, if the input parameter is optional, do not map the respective Destination argument; or do not expose the screen block; or change the Destination input parameter data type. Learn more about input parameters.

Clicking the symbol will take you directly to the screen block reference offending property.

See Also

Expose a Screen Block | About Error Messages