When large corporations receive periodic reports from their collection agencies, they usually come in varying formats and contain expansive amounts of data, each organized by a different set of standards. This process doesn't allow for an apples-to-apples performance comparison between vendors. Also, because many companies don't have the capability to archive their information, there is no way for them to generate analysis based on historical records. This results in the inability to assess which vendor is working hardest and succeeding most often, and also what the particular strengths or weaknesses of each agency are.