UML22 — Section Activities: Default weight

Default weight. In Activities, ActivityEdge, Assocations, the default weight should be unlimited . For example, a ReadStructuralFeatureAction of a mult-valued attribute might produce multiple tokens, which flow to the input of an AddStructuralFeatureAction. Do not want the values to be input to separate executions of AddStructuralFeatureAction

The spec says weight determines the minimum number of tokens that must traverse the edge (offers accepted by target) at the same time. And it requires any tokens offered above the minimum to be taken at the same time:
When the minimum number of tokens are offered, all the tokens at the source are offered to the target all at once.
So the default can remain 1 for the example.
Revised Text:
None.
Disposition: Closed No Change