Each of these 18 studies is generating essential records. But here is the infrastructure problem that this lesson addresses: the types of records being generated, the urgency with which they must be captured, and the parties responsible for producing them differ systematically by trial phase. A records infrastructure designed as though all records arrive at the same pace, from the same sources, with the same criticality, will fail under this kind of portfolio load. It will miss pre-study records that should have been in place before enrollment began. It will lose track of sponsor-generated records that arrive during conduct but are not filed because nobody was watching for them. It will discover at close-out that records the investigator needed to retain were never transferred from the sponsor.

This lesson introduces the temporal dimension of essential record management -- the dimension that Lessons 1 and 2 did not address. Lesson 1 established what qualifies as an essential record under E6(R3). Lesson 2 established how to determine whether a specific record is essential. This lesson asks: when must each record exist, and who is responsible for producing it? And it asks that question not for a single study, but for a portfolio of studies simultaneously traversing different lifecycle phases.

Each of these 18 studies is generating essential records. But here is the infrastructure problem that this lesson addresses: the types of records being generated, the urgency with which they must be captured, and the parties responsible for producing them differ systematically by trial phase. A records infrastructure designed as though all records arrive at the same pace, from the same sources, with the same criticality, will fail under this kind of portfolio load. It will miss pre-study records that should have been in place before enrollment began. It will lose track of sponsor-generated records that arrive during conduct but are not filed because nobody was watching for them. It will discover at close-out that records the investigator needed to retain were never transferred from the sponsor.

This lesson introduces the temporal dimension of essential record management -- the dimension that Lessons 1 and 2 did not address. Lesson 1 established what qualifies as an essential record under E6(R3). Lesson 2 established how to determine whether a specific record is essential. This lesson asks: when must each record exist, and who is responsible for producing it? And it asks that question not for a single study, but for a portfolio of studies simultaneously traversing different lifecycle phases.