The interactive quarterly timeline graphs below show changes in the total number of errors identified by the Data Quality Committee (DQC) in public company financial reports accepted into the SEC’s EDGAR database.

Generally, application of the DQC’s freely-available, open-source rules and guidance has resulted in reduction of issues since the collaborative effort of industry stakeholders – filers, filing agents, data providers, academics, standard-setters and member associations – was launched in 2015. An increase in issues identified by each rule commonly corresponds to complexities associated with the annual filling period and/or subsequent revisions to the rule.

Hover over any of the bars to get totals by quarter. To view any chart in full screen, place your cursor over the x-axis (bottom), then click the full screen icon in the lower right corner of the graph.

Certain axes in the US GAAP taxonomy should only have certain members as shown in the US GAAP taxonomy. This rule tests whether these axes have inappropriate members.

Axis with Inappropriate Members was initially approved by the DQC September, 2016.

Evaluates whether a calculation relationship in the company’s extension is a reversal of the calculation defined in the US-GAAP taxonomy used for the filing.

Reversed Calculation was initially approved by the DQC October, 2017.

Elements that should not be reported with negative values. Documentation includes a list of elements tested.

Negative Values was initially approved by the DQC November, 2015.

Identifies the balance type of the elements in the calculation linkbase that are children of the operating cash flow elements in the US GAAP taxonomy, specifically the elements NetCashProvidedByUsedInOperatingActivities or NetCashProvidedByUsedInOperatingActivitiesContinuingOperations and determines whether their effective calculation weights are accurate. The effective calculation weight is the calculation weight of the child element relative to operating cash flow element irrespective of the level the child element exists at in the calculation hierarchy.

Incorrect Calculation Weights in Operating Cash Flows was initially approved by the DQC October, 2017.

This rule identifies facts with a given axis and member that cannot be tagged with a value irrespective of the line item used.

Member Values was initially approved by the DQC October, 2017.

This rule identifies those cases where the filer has reported the StatementGeographicalAxis in conjunction with a line item in the Compensation Related Costs and Retirement Benefits section of the taxonomy.

Geographical Axis Used with Pension Line Items was initially approved by the DQC October, 2018.

NOTE: As these are real-time, the most recent quarter should not be considered as indicative of a trend.