A description on how the CAs process reports received from submitting entities can be found in Annex I of these guidelines.
5.7.1 Non applicable fields and population of instrument reference data fields
Where the table of fields indicates that a field is not applicable under the circumstances defined in the field’s description or in the validation table available on Technical Reporting Instructions - MiFIR Transaction Reporting (ESMA/2016/1521) (updated 20 July 2017), that field should not be populated and the transaction report should be rejected if not compliant with the validations specified in the table on the ESMA website. For example, where a Firm indicates in the report that execution took place by an algo, Field 60 (Country of the branch supervising the person responsible for the execution) should not be populated.
The situation with population of reference data information is slightly different. Table 2 of Annex I of Commission Delegated Regulation (EU) 2017/590 states tha
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