> ## Documentation Index
> Fetch the complete documentation index at: https://docs.m3ter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Charges

## Retrieve Charge

**Function name:** `m3ter_GetCharge`
**Category:** READ
**HTTP method:** GET
**Destination:** m3ter

Retrieve a Charge for the given UUID.

### Parameters

| Name                       | Label       | Type                   | Required | Description                           | Constraints                                                           |
| -------------------------- | ----------- | ---------------------- | :------: | ------------------------------------- | --------------------------------------------------------------------- |
| `integrationCredentialsId` | Credentials | M3terEntityParameter   |    Yes   | The m3ter credentials to use.         | m3terEntity: IntegrationCredentials, authType: M3TER\_SIGNED\_REQUEST |
| `id`                       | id          | LookupParameter        |    Yes   | The UUID of the Charge to retrieve.   | -                                                                     |
| `statePath`                | State Path  | StateVariableParameter |    No    | State variable to store the response. | -                                                                     |

### Exits

| Exit    | Description                                                                      |
| ------- | -------------------------------------------------------------------------------- |
| `NEXT`  | The API call succeeded.                                                          |
| `ERROR` | The API call failed. Error details are stored in the `m3shError` state variable. |

## Update Charge

**Function name:** `m3ter_UpdateCharge`
**Category:** WRITE
**HTTP method:** PUT
**Destination:** m3ter

Update a Charge for the given UUID.

**NOTE:** When you update a Charge on an Account, you can provide either a Charge `amount` or Charge `units` together with a `unitPrice`, but *not both*.

### Parameters

| Name                       | Label        | Type                   | Required | Description                            | Constraints                                                           |
| -------------------------- | ------------ | ---------------------- | :------: | -------------------------------------- | --------------------------------------------------------------------- |
| `integrationCredentialsId` | Credentials  | M3terEntityParameter   |    Yes   | The m3ter credentials to use.          | m3terEntity: IntegrationCredentials, authType: M3TER\_SIGNED\_REQUEST |
| `id`                       | id           | LookupParameter        |    Yes   | The UUID of the Charge to update.      | -                                                                     |
| `requestPath`              | Request Path | StateVariableParameter |    Yes   | State variable containing the request. | -                                                                     |
| `statePath`                | State Path   | StateVariableParameter |    No    | State variable to store the response.  | -                                                                     |

### Exits

| Exit    | Description                                                                      |
| ------- | -------------------------------------------------------------------------------- |
| `NEXT`  | The API call succeeded.                                                          |
| `ERROR` | The API call failed. Error details are stored in the `m3shError` state variable. |

## Delete Charge

**Function name:** `m3ter_DeleteCharge`
**Category:** WRITE
**HTTP method:** DELETE
**Destination:** m3ter

Delete the Charge for the given UUID.

### Parameters

| Name                       | Label       | Type                   | Required | Description                           | Constraints                                                           |
| -------------------------- | ----------- | ---------------------- | :------: | ------------------------------------- | --------------------------------------------------------------------- |
| `integrationCredentialsId` | Credentials | M3terEntityParameter   |    Yes   | The m3ter credentials to use.         | m3terEntity: IntegrationCredentials, authType: M3TER\_SIGNED\_REQUEST |
| `id`                       | id          | LookupParameter        |    Yes   | The UUID of the Charge to update.     | -                                                                     |
| `statePath`                | State Path  | StateVariableParameter |    No    | State variable to store the response. | -                                                                     |

### Exits

| Exit    | Description                                                                      |
| ------- | -------------------------------------------------------------------------------- |
| `NEXT`  | The API call succeeded.                                                          |
| `ERROR` | The API call failed. Error details are stored in the `m3shError` state variable. |

## List Charges

**Function name:** `m3ter_ListCharges`
**Category:** READ
**HTTP method:** GET (paginated)
**Destination:** m3ter

Retrieve a list of Charge entities

### Parameters

| Name                       | Label            | Type                    | Required | Description                                | Constraints                                                           |
| -------------------------- | ---------------- | ----------------------- | :------: | ------------------------------------------ | --------------------------------------------------------------------- |
| `integrationCredentialsId` | Credentials      | M3terEntityParameter    |    Yes   | The m3ter credentials to use.              | m3terEntity: IntegrationCredentials, authType: M3TER\_SIGNED\_REQUEST |
| `statePath`                | State Path       | StateVariableParameter  |    No    | State variable to store the response.      | -                                                                     |
| `queryParams`              | Query Parameters | KeyValueLookupParameter |    No    | Query parameters to include in the request | allowedValues: accountId,entityType,entityId,billDate,ids,scheduleId  |

### Exits

| Exit    | Description                                                                      |
| ------- | -------------------------------------------------------------------------------- |
| `NEXT`  | The API call succeeded.                                                          |
| `ERROR` | The API call failed. Error details are stored in the `m3shError` state variable. |

## Create Charge

**Function name:** `m3ter_CreateCharge`
**Category:** WRITE
**HTTP method:** POST
**Destination:** m3ter

Create a new Charge.

**NOTES:**

* To create an ad-hoc Charge on an Account, use the `accountId` request parameter.
* To create a balance fee Charge for a Balance, use the `entityId` request parameter to specify which Balance on an Account the Charge is for.
* To define the value of the Charge amount that is billed, you can simply specify an `amount` or use a number of `units` together with a `unitPrice` for a calculated value = units x unit price. But you cannot specify *both an amount and units/unit price*.

### Parameters

| Name                       | Label        | Type                   | Required | Description                            | Constraints                                                           |
| -------------------------- | ------------ | ---------------------- | :------: | -------------------------------------- | --------------------------------------------------------------------- |
| `integrationCredentialsId` | Credentials  | M3terEntityParameter   |    Yes   | The m3ter credentials to use.          | m3terEntity: IntegrationCredentials, authType: M3TER\_SIGNED\_REQUEST |
| `requestPath`              | Request Path | StateVariableParameter |    Yes   | State variable containing the request. | -                                                                     |
| `statePath`                | State Path   | StateVariableParameter |    No    | State variable to store the response.  | -                                                                     |

### Exits

| Exit    | Description                                                                      |
| ------- | -------------------------------------------------------------------------------- |
| `NEXT`  | The API call succeeded.                                                          |
| `ERROR` | The API call failed. Error details are stored in the `m3shError` state variable. |