What circumstance might require the use of more than one TPFDD entry for a force requirement?

The circumstance that requires the use of more than one TPFDD (Time-Phased Force and Deployment Data) entry for a force requirement is split sourcing. This concept refers to the need to source a single force requirement from multiple locations or providers. For example, if a military operation needs to draw equipment or personnel from different bases or countries due to availability, strategic positioning, or logistical considerations, multiple TPFDD entries would be necessary to accurately reflect those various sourcing locations.

Each entry would detail the specific elements of the force drawn from different sources, allowing planners to comprehensively track and manage the deployment process. In contrast, the other options—mission alignment, resource allocation, and operational planning—primarily relate to different aspects of military planning and do not inherently necessitate multiple TPFDD entries.