BLOCKER A critical error. The envelope can not be released. Normally, a blocker is an error in the format of the file, or in the structure or content of the data. Such a critical error makes it impossible for the delivery to be harvested and integrated into the database. The envelope can only be released if every incorrect file is removed and replaced by corrected files. ERROR An important error. The envelope can be released, but part of its content may be excluded from the European database. Data Reporters are strongly advised to correct errors. A clarification or a resubmission WILL be requested when the data is processed and the final feedback is added to the envelope. FAILED QC failed to run. INFO Other issues related to the quality of the data or content of the submission. The envelope can be released REGERROR A possible compliant error with legislation has been detected. Envelope can be released. Data Reporters are strongly advised to correct errors. A clarification or a resubmission WILL be requested when the data is processed and the final feedback is added to the envelope. SKIPPED Data check has been executed, but there was "Nothing found to check", typically because of missing optional data. UNKNOWN WARNING An issue that may be an error. Data Reporters are advised to check the correctness of the records or values that raised the warning. The envelope can be released. Data Reporters are strongly advised to check warnings. A clarification or a resubmission MAY be requested when the data is processed and the final feedback is added to the envelope.