What is the primary reason for requiring process servers to file proof of service?

Filing proof of service serves a critical function in maintaining the integrity of the judicial process. This requirement ensures that there is an accurate and official record of when and how a legal document was served to a party. By documenting this information, the court can confirm that all parties were properly notified of legal actions against them, which is fundamental to upholding due process.

This record-keeping not only supports the transparency of legal proceedings but also provides a basis for any further legal actions, ensuring that all parties involved are aware of their rights and responsibilities as the case progresses. Without proof of service, there could be disputes about whether a party received the necessary information to respond to a lawsuit, potentially compromising the fairness of the legal process.

While other options touch on important aspects of the legal system—like verifying a process server's identity, claiming fees, or informing defendants—they do not encapsulate the overarching importance of maintaining court records as it relates to the proper administration of justice. Therefore, the primary reason for requiring process servers to file proof of service is indeed to maintain accurate court records.