When publishing to MQTT (RBE, Sparkplug, JSON), data values are published with corresponding tag name, if configured in ACE, with some exceptions (substitutions):

• If tagname includes a period  .  it's tag will be published with a slash  /  instead.
• If tagname includes an integer between square brackets for an array (such as [11] ), it's tag will be published with the integer surrounded by slash and underscore instead (such as /11_ ).

Dots and square brackets are required in tagnames for some protocols, but some hosts don't allow them.