There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Update the refund policy of an offer using an AWS SDK
<a name="marketplace-catalog_example_marketplace-catalog_UpdateRefundPolicy_section"></a>

The following code examples show how to update the refund policy of an offer.

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#### [ Java ]

**SDK for Java 2.x**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Marketplace API Reference Code Library](https://github.com/aws-samples/aws-marketplace-reference-code/tree/main/java#catalog-api-reference-code) repository. 
To run this example, pass the following JSON changeset to `RunChangesets` in *Utilities to start a changeset* from the **Utilities** section.  

```
{
    "Catalog": "AWSMarketplace",
    "ChangeSet": [
        {
            "ChangeType": "UpdateSupportTerms",
            "Entity": {
                "Type": "Offer@1.0",
                "Identifier": "offer-1111111111111"
            },
            "DetailsDocument": {
                "Terms": [
                    {
                        "Type": "SupportTerm",
                        "RefundPolicy": "Updated refund policy description"
                    }
                ]
            }
        }
    ]
}
```
+  For API details, see [StartChangeSet](https://docs.aws.amazon.com/goto/SdkForJavaV2/marketplace-catalog-2018-09-17/StartChangeSet) in *AWS SDK for Java 2.x API Reference*. 

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#### [ Python ]

**SDK for Python (Boto3)**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Marketplace API Reference Code Library](https://github.com/aws-samples/aws-marketplace-reference-code/blob/main/python##catalog-api-reference-code) repository. 

```
{
    "Catalog": "AWSMarketplace",
    "ChangeSet": [
        {
            "ChangeType": "UpdateSupportTerms",
            "Entity": {
                "Type": "Offer@1.0",
                "Identifier": "offer-1111111111111"
            },
            "DetailsDocument": {
                "Terms": [
                    {
                        "Type": "SupportTerm",
                        "RefundPolicy": "Updated refund policy description"
                    }
                ]
            }
        }
    ]
}
```
Run this script to start the changeset. Helper functions are defined in *Utilities to start a changeset* from the **Utilities** section.  

```
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
"""
Purpose
Shows how to use the AWS SDK for Python (Boto3) to update refund policy of my offer
CAPI-18
"""

import os

import utils.start_changeset as sc  # type: ignore
import utils.stringify_details as sd  # type: ignore

fname = "changeset.json"
change_set_file = os.path.join(os.path.dirname(__file__), fname)

change_set = sd.stringify_changeset(change_set_file)


def main():
    sc.usage_demo(change_set, "Update refund policy of my public offer")


if __name__ == "__main__":
    main()
```
+  For API details, see [StartChangeSet](https://docs.aws.amazon.com/goto/boto3/marketplace-catalog-2018-09-17/StartChangeSet) in *AWS SDK for Python (Boto3) API Reference*. 

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