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At present, business processes contain time requirements within their specifications. Logistics, e-commerce, are examples of these requirements, among others. The time involved in business processes is important regarding the interaction among actors. The technology involved in building these processes plays a key role in assessing the risk of implementation. A technology with the ability to express time restrictions is vital to model systems with this kind of specifications. Workflow (Wf) is a widely accepted and recognized technology that can improve business processes. Interface 1 of Wf enables to define processes by means of processes definition language (PDL), but this language does not have time elements. Our research work introduces a theoretical framework to extend the WPDL grammar to allow specifying time restrictions. Besides, it establishes a correspondence between the PD, activities kinds and transitions restrictions, and its underlying Petri net with clocks (PNwC) preserving its semantics. Here, we focus specifically in the SUBFLOW activities type and the XOR SPLIT attribute, as a strategy to study partially the WPD. The correspondence is specified through the RAISE specification language (RSL). The correlation between these formalisms allows us to define business process with temporary restrictions. The PNwC carries out the model validation.