In some instances, cached data and/or data included in particular data elements is insufficient to generate a report with data corresponding to all fields, to supply all data identified in the report protocol and/or to provide all data specified in a destination-associated report specification. In these instances, an incomplete report may be generated and transmitted or additional data requests be transmitted and/or element-related data may be retrieved to identify the missing data. For example, a message may be sent to a user device associated with an institution corresponding to a data element, which may be configured to be presented at a user interface (e.g., via an email or message) requesting the specified data. As another example, an electronic record or past data element (e.g., received in a same or different data stream) that is associated with a same identifier as one pertaining to cached data can be identified. Other data can then be extracted from a request-responsive communication or identified record. It will be appreciated that the relational and time-separated data identification may provide data that may not precisely correspond to the data in a data element represented in a report (e.g., due to time separation), though it may be sufficiently linked for reporting contexts. The report protocol may indicate whether (for example) request communications are to be transmitted and/or corresponding data is to be retrieved in response to detecting missing data or if a report output is to be generated without the data.