Unique message identifier. In specific instances (e.g., message containing a video sent to a big chat), the server might automatically schedule a message instead of sending it immediately. In such cases, this field will be 0 and the relevant message will be unusable until it is actually sent
Unique message identifier. In specific instances (e.g., message containing a video sent to a big chat), the server might automatically schedule a message instead of sending it immediately. In such cases, this field will be 0 and the relevant message will be unusable until it is actually sent