Numbering Sequence Messages in Sequence Diagram

In this tutorial, we will introduce two main ways - (1) diagram-based and (2) frame-based. When we specify the "scope"" to be either diagram or frame, basically we are telling VP-UML where it should restart the number sequence for messages.

Note: The following example is demonstrated using Visual Paradigm for UML Modeler edition.

1. Diagram-based Numbering

Diagram-based Numbering (Single Level)

In your sequence diagram, right click on the background and select Sequence Number > Single Level.

As an example, we can see that despite making use of a frame element, the number sequence continues across, as long as they are within the same diagram.

Diagram-based Numbering (Nested Level)

In your sequence diagram, right click on the background and select Sequence Number > Nested Level.

Similarly, we can see that despite making use of a frame element, the number sequence continues across, as long as they are within the same diagram.

However, here it counts with "decimal numbers" to reflect the nesting level. Numbers that differ by one integer after the decimal point represent messages related at the same level of nesting or procedural calling. For example, 1.1 and 1.2.

2. Frame-based Numbering

Frame-based Numbering (Single Level)

In your sequence diagram, right click on the background and select Sequence Number > Frame-based Single Level.

As an example, we can see that the message numbering restarts in the frame, despite it is within the same diagram.

Frame-based Numbering (Nested Level)

In your sequence diagram, right click on the background and select Sequence Number > Frame-based Nested Level.

As an example, here we can see that the message numbering restarts in the frame. Also, "decimals numbers" are used to reflect the nesting levels of the procedural callings.