---
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title: Linear Relationships in Revenue Cloud for Communications
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/ind/264-0-0/comms_linear_relationships_in_revenue_cloud_for_communications.md
canonical_url: https://help.salesforce.com/s/articleView?id=ind.comms_linear_relationships_in_revenue_cloud_for_communications.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 666fff37f9248f36e7f3675c2b3a7e045135fdbdec850dac33a42da9eabdbd4e
description: Model functional dependencies between products without locking them into a rigid parent-child bundle. A linear relationship keeps two products linked across quotes, orders, and assets while each product keeps its own price, term, and lifecycle. A Relies On rule defines that a source product relies on a related product. For example, a VoIP service relies on internet access.
products:
  - Communications
release: "264"
---
# Linear Relationships in Revenue Cloud for Communications

Model functional dependencies between products without locking them into a rigid parent-child bundle. A linear relationship keeps two products linked across quotes, orders, and assets while each product keeps its own price, term, and lifecycle. A Relies On rule defines that a source product relies on a related product. For example, a VoIP service relies on internet access.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col style="width:100%"></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Lightning Experience</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: <strong>Enterprise</strong>, <strong>Unlimited</strong>, and <strong>Developer</strong> Editions with Communications Cloud Advanced</td></tr></tbody></table>

## How Relies On Rules Differ from Bundles

A bundle models parent-child containment, where the parent owns the child and lifecycle actions cascade to the components. A Relies On rule models a dependency between two products of equal standing. Reps can order, change, and disconnect each product independently, and the dependency applies to required links and cancellation.

## Relies On Rule Concepts

- Source product: The product that relies on another product (the dependent product).
- Related product: The product that another product relies on.
- Forward cardinality: The number of related products that a source product requires. The minimum determines whether the relationship is optional (minimum 0) or mandatory (minimum 1 or higher). The maximum sets the count of related products that can be linked. The highest value allowed is 10.

#### See Also

- [Set Up Linear Relationships](https://help.salesforce.com/s/articleView?id=ind.comms_set_up_linear_relationships.htm&language=en_US)
- [Manage Linear Relationships](https://help.salesforce.com/s/articleView?id=ind.comms_manage_linear_relationships.htm&language=en_US)