> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fire.rest/llms.txt
> Use this file to discover all available pages before exploring further.
# Configuration by level
> How to define each method's configuration fields —credentials and settings— by brand, store, or device in PayBridge (account).
**Coming soon.** PayBridge is not available yet. This guide previews how it will work; the screens it describes may not be enabled in your backoffice yet.
Beyond deciding **where** a method is turned on ([Availability](/en/manuals/paybridge/availability)), in PayBridge you define **what data** it operates with. That data —credentials, identifiers, and other fields— is stored per level, combined from general to specific, and is what Fire keeps **synced to DSI** so that each charge can then travel lean.
Values combine from general to specific: **General (method) → Brand → Store → Device**. The most specific level wins per key; whatever a level doesn't define is inherited from the one above.
## Prerequisites
* Backoffice access at **[app.fire.rest](https://app.fire.rest)**, with permissions on the account.
* Country, account, and brand selected in the context switcher.
## 1. Open the Configuration tab
Go to **PayBridge → Payment methods**, open a method, and go to the **Configuration** tab. The screen is a master-detail: the level tree on the left, the selected level's configuration object on the right.
## 2. Pick a level
In the tree on the left, select the level you want to view or edit:
* **Brand** — applies to all of the brand's stores.
* **Store** — expand the brand to see its stores.
* **Device** — expand a store to see its POS terminals and kiosks.
Each level shows a counter with the number of fields defined at that level.
## 3. Read the effective object
On the right you see the selected level's **effective object**: its own fields plus those inherited from higher levels. There are two views:
* **Client** — a readable list: each field shows which level it comes from and, if it overrides a higher level, flags it.
* **Developer** — the JSON object as-is, ready for the runtime.
Use the eye icon to show or hide values marked as secret.
## 4. Add or edit fields
Click **Configure fields…** to open the level's editor. For each field you define:
* **Key** — the identifier (for example `merchant_id`).
* **Type** — Text, Number, Boolean, or JSON.
* **Value** — the field's content.
* **Description** *(optional)* — what the field is for.
* **Secret** — whether the value should be shown masked (credentials).
The right side of the editor shows live how the effective configuration looks before saving.
## 5. Save
Click **Save changes**. The system records the date and the user who updated each modified field. The level's values are reflected immediately in the effective object.
## How this configuration is used
PayBridge and DSI work across **two separate planes**:
1. **Configuration plane.** Fire is the source of truth and **syncs this configuration to DSI** ahead of time: when you change a field, method, or channel, Fire updates the merchant's configuration on DSI (enabled methods, branches, terminals, and credentials). This way DSI already knows the merchant before any charge.
2. **Transaction plane.** When a payment is made, since DSI already has the configuration, the payload Fire sends is **lean** (order, amount, method, reference). There's no need to enrich the request with these fields on every payment.
That's why what you define here matters: it's what Fire keeps in sync with DSI so charges stay simple and consistent.
The effective object you see on the right is exactly what gets synced for that scope (brand, store, or device).
## Related
Decide where the method is turned on and in which channels.
The methods PayBridge considers in each country.