> ## Documentation Index
> Fetch the complete documentation index at: https://docs.loqate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Process Fields

Non-address fields that are either generated by the engine during processing or referenced from the country-specific configuration files are described below. These fields are returned alongside the Address and Report fields.

Field descriptions for all processes can be accessed from [the main field descriptions menu](/field-descriptions/).

| Field                     | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **MatchRuleLabel \[out]** | Loqate Engine uses a set of rules to match the input with the reference data. Each rule is identified by a match rule label. Please refer to the below links for more information regarding the Match Rules.<br />- [Match Process](/available-processes/match-process/)<br />- [Match Rule Syntax](/support/match-rules-syntax/)<br /><br />Possible values include:<br />- `rlh` (Reflex Hash)<br />- `rlfnpq` (Reflex filter, populate quick)<br />- `rlfnp` (Normal Reflex filter and populate)<br />- `rlhng` (Normal Reflex filter and populate with HashNG)<br />- `1`, `1a`, `1ab`, …, `6` (Verify Match Rule name)<br />- `1`, `2`, `3`, … (Reference Tool results)<br /><br />The `MatchRuleLabel` is mainly used for debugging and troubleshooting on case queries and issues. Customers are not expected to make use of this field within their integrations. |
| **DuplicateInfo \[out]**  | A single string indicating what is being removed from the original input (when `DuplicateHandlingFlag` is used).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| **HyphenClass \[out]**    | A code of `A`, `B`, or `C` that identifies how a hyphen in a premise will be handled.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| **\_L \[out]**            | A string providing an audit trail of parse, match, and formatting tools and options. Used only for debugging and troubleshooting.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |