Configuring Variable Installments

DE Ratenzahlung
FR versements échelonnés

← Enabling Installments

Variable installments use a JSON configuration that can include variable data for complex, customer-specific payment terms that cannot be handled by fixed settings.

When to use service period-based installments

Typical use cases for service period-based installments include, for example

• Individual customer negotiations requiring custom terms
• Account-specific payment amounts or schedules
• Complex payment calculations based on variable invoice data
• Dynamic payment plans that change based on certain conditions

Understanding JSON configuration

The JSON configuration for installments uses the same information and follows the same rules as the custom setting. The keys amount, dateReference, period, and rate are used and work exactly the same way. The titles key, however, differs – it expects the data in a map structure like "index" : { "language" : "value" } (see Overwriting Titles for Individual Installments and Languages).

Assume, for example, a payment plan that involves two installments, with a fixed first amount of 100. The corresponding JSON configuration would look like this:

{
    "period": "1m(2)",
    "amount": "100",
    "titles": {
        "default":{
            "default":"Installment [PosNo]",
            "de":"Rate [PosNo]"
        }
    }
}

As another example, assume you want to create installments for every quarter between the service period start and the service period end of an invoice. Note that in this case, you do not need to provide an amount or rate, as JustOn calculates the installments as the sum of the proportional distribution of the invoice line item amounts. The corresponding JSON configuration would look like this:

{
    "period": "Service Quarter",
    "titles": {
        "default":{
            "default":"Installment [PosNo]",
            "de":"Rate [PosNo]"
        }
    }
}

As an example, assume that you want to create a payment plan that involves six monthly installments, with a fixed first installment whose amount is fetched from the custom Account field First Installment, and the remainder evenly split into five subsequent payments.

The setup differs depending on whether you define the installment configuration on the invoice or fetch it from the subscription or the GIR source object.

Define on invoiceFetching from source

1. Creating CustomInstallment field on invoice as formula
2. Setting installment type to Custom

1. Creating CustomInstallment field on invoice as text area
2. Creating ON_CustomInstallment on subscription or GIR source as formula
3. Creating ON_InstallmentType on subscription or GIR source set to Custom

Configuring Installment on Invoice

Creating Formula Field Custom Installment

Create the field to hold the formula that yields the JSON configuration:

1. Navigate to the fields list of the Invoice object (ONB2__Invoice__c).

2. Create the following new field.

   Field Name	API Name	Data Type
   Custom Installment	CustomInstallment	Formula (Text)

   As soon as you want to retrieve values from other fields, you use a formula. Make sure that in this case, you must apply Salesforce's rules for building formula fields (see Build a Formula Field in the Salesforce Help), namely enclosing the strings with quotation marks and combining the strings with the concatenation operator.

   Following the example, the formula to produce the JSON as required would look as follows:

   '{' &
   '    "period": "1m(6)",' &
   '    "amount": "' & TEXT(ONB2__Account__r.First_Installment__c) & '",' &
   '    "titles": {' &
   '        "default":{' &
   '            "default":"Installment [PosNo]",' &
   '            "de":"Rate [PosNo]"' &
   '        },' &
   '        "1":{' &
   '            "default":"Deposit",' &
   '            "de":"Anzahlung"' &
   '        }' &
   '    }' &
   '}'
   

Setting Installment Type to Custom

If you apply variable installments using the CustomInstallment field, make sure to set the Installment Type field on the invoice (or the source object) to Custom.

1. Add Custom to the Installment Type field picklist on Invoice object.

   To allow for applying variable installments, you must add the value Custom to the value picklist for the Installment Type field of the Invoice object.

   1. Navigate to the Installment Type field of the Invoice object.
   2. In the Values section, click New.
   3. Type Custom into the text area.
   4. Click Save.

2. Set Installment Type to Custom on invoices using variable installments.

   You can have users apply the custom installment manually, or use the ON field mechanism, Salesforce flows or other automation tools to have the Installment Type field set automatically.

Fetching Installment Configuration From Source

Creating Text Field Custom Installment

Create the target field to hold the fetched JSON configuration on the invoice:

1. Navigate to the fields list of the Invoice object (ONB2__Invoice__c).

2. Create the following new field.

   Field Name	API Name	Data Type
   Custom Installment	CustomInstallment	Text Area

   This field will be filled from a source object on invoice creation.

Creating Custom Installment Formula Field on Invoice Source

Create the field to hold the formula that yields the JSON configuration on the subscription or the source object for the generic invoice run:

1. Navigate to the fields list of the Subscription object or the relevant GIR source object.

2. Create the following new field.

   Field Name	API Name	Data Type
   Custom Installment	ON_CustomInstallment	Formula (Text)

   As soon as you want to retrieve values from other fields, you use a formula. Make sure that in this case, you must apply Salesforce's rules for building formula fields (see Build a Formula Field in the Salesforce Help), namely enclosing the strings with quotation marks and combining the strings with the concatenation operator.

   Following the example, the formula to produce the JSON as required would look as follows:

   '{' &
   '    "period": "1m(6)",' &
   '    "amount": "' & TEXT(ONB2__Account__r.First_Installment__c) & '",' &
   '    "titles": {' &
   '        "default":{' &
   '            "default":"Installment [PosNo]",' &
   '            "de":"Rate [PosNo]"' &
   '        },' &
   '        "1":{' &
   '            "default":"Deposit",' &
   '            "de":"Anzahlung"' &
   '        }' &
   '    }' &
   '}'
   

   The produced JSON will be copied to the Invoice field CustomInstallment on invoice generation.

Creating Installment Type Field on Invoice Source

To set the installment type to Custom on invoice creation, you create the field ON_InstallmentType on the subscription or the GIR source object:

1. Navigate to the fields list of the Subscription object or the relevant GIR source object.

2. Create the following new field.

   Field Name	API Name	Data Type	Value
   Custom Installment	ON_InstallmentType	Text	Custom

   This will copy the value Custom to the Invoice field Installment Type on invoice generation, enabling the custom installment.