> ## Documentation Index
> Fetch the complete documentation index at: https://docs.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Back-End Integration Use Cases

This section provides information about integrating the Reseller's back-end systems with Partner Ecosystem Management. Here you can find integration details about each of the major use cases in Partner Ecosystem Management. Each use case provides API sequence information and scenario diagrams.

**Note:** The APIs used for integration with Partner Ecosystem Management are the MarketONE APIs.

Partner Ecosystem Management has the following use cases for subscription management integration:

* [Purchase Subscription](M1onlyPurchaseSubscription)
* [Resend Redemption Code](M1onlyResendRedemptionCode)
* [Update Subscription (Upgrades and Downgrades)](M1onlyUpdateSubscription)
* [Cancel Subscription](M1onlyCancelSubscription)
* [Pause Subscription](M1onlyPauseSubscription)
* [Resume Subscription](M1onlyResumeSubscription)

Any call within the use cases that isn't successful will be retried based on standard retry configurations and the error code.

* **[Purchase Subscription](M1onlyPurchaseSubscription)**

* **[Resend Redemption Code](M1onlyResendRedemptionCode)**

* **[Update Subscription (Upgrades and Downgrades)](M1onlyUpdateSubscription)**

* **[Cancel Subscription](M1onlyCancelSubscription)**

* **[Pause Subscription](M1onlyPauseSubscription)**

* **[Resume Subscription](M1onlyResumeSubscription)**

**Parent topic:**[Initial Setup: Front-End and Back-End Integration](aggregatorActivation)


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