From SysML1.0: 15.3.2.1 Allocate(from Allocations):

Description

Allocate is a dependency based on UML::abstraction. It is a mechanism for associating elements of different types, or in different hierarchies, at an abstract level. Allocate is used for assessing user model consistency and directing future design activity. It is expected that an «allocate» relationship between model elements is a precursor to a more concrete relationship between the elements, their properties, operations, attributes, or sub-classes.

Allocate is a stereotype of a UML4SysML::Abstraction which is permissible between any two NamedElements. It is depicted as a dependency with the “allocate” keyword attached to it.

Allocate is directional in that one NamedElement is the “from” end (no arrow), and at least one NamedElement is the “to” end (the end with the arrow).

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Constraints

[ERROR] A single «allocate» dependency shall have only one supplier (from), but may have one or many clients (to).

If subtypes of the «allocate» dependency are introduced to represent more specialized forms of allocation, then they should have constraints applied to supplier and client as appropriate.'

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