Contents

1. Introduction

In order to facilitate interoperability for the Evidence Exchange, a set of business rules is defined which must be applied in each transaction (Evidence Request, Evidence Reponse, Error Response). For each business rule, a corresponding schematron rule is defined that references the same rule ID. The business rules are sets of rules that guarantee the correct structure of the transactions and they clarify the content of instances by stating mandatory fields, fixed values (like code lists), the dependency between fields in the same object and dependency between different objects. The business rules are grouped into two main sections depending on their scope:

• Structure: Business rules that guarantee the correct structure of the message use the prefix "S" before the numer (e.g. S009):
  • Check information constraints related to the use of different components such as namespaces, root elements, slots, data types including "multidimensional" checks crossing the barrier between the different XSD schemes (XSD-Binding and XSD-Restriction).
• Content: Business rules that ensure the correct content format of information objects use the prefix "C" before the numer (e.g. C012):
  • Check cardinalities, identifiers, formats, fixed values, mandatory set of values on specific fields (code lists) and dependencies between fields;

Each business rule is associated with an error level (flag) that expresses a validation result when an XML instance is proven against the rules through schematron validation:

• note: a hint that an additional object is mandatory in some cases;
• warning: offering recommendations to improve the quality of the instance or regain full validity;
• fatal: the rule point to a major issue of consistency or data correctness.

The rule type classifies the principle goal of a business rule. The rule ID is used to identify the rule and can be used as an error code next to the rule description. Rule descriptions containing "MUST" correspond to an error level that is flagged as fatal, while "SHOULD" rules correspond to an error level that is flagged as a warning. "MAY" rules point to error level note. The Element and Location points to the correct information object that is affected by the rule. 

2. Business rules associated to the Evidence Request

The tables below collect the set of business rules affecting the creation of Evidence Request instances. 

2.1 Business rules that prove the correct structure of Evidence Requests

The rule ID references to the transaction "Evidence Request" (EDM-REQ) and indicates the proof of structure through the prefix "S" before the number.

2.2 Business rules that prove the correct use of information objects in Evidence Requests

The rule ID references to the transaction "Evidence Request" (EDM-REQ) and indicates the proof of structure through the prefix "C" before the number.

3. Business rules associated to the Evidence Response

The tables below collect the set of business rules affecting the creation of Evidence Response instances. 

3.1 Business rules that prove the correct structure of Evidence Responses

The rule ID references to the transaction "Evidence Response" (EDM-RESP) and indicates the proof of structure through the prefix "S" before the number.

3.2 Business rules that prove the correct use of information objects in Evidence Responses

The rule ID references to the transaction "Evidence Response" (EDM-RESP) and indicates the proof of structure through the prefix "C" before the number.

4. Business rules associated to the Error Response

The tables below collect the set of business rules affecting the creation of Error Response instances. 

4.1 Business rules that prove the correct structure of Error Responses

The rule ID references to the transaction "EDM Error Response" (EDM-ERR) and indicates the proof of structure through the prefix "S" before the number.

4.2 Business rules that prove the correct use of information objects in Error Responses

The rule ID references to the transaction "EDM Error Response" (EDM-ERR) and indicates the proof of structure through the prefix "C" before the number.