# CompatibleVersionsMap
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A map of OpenSearch or Elasticsearch versions and the versions you can upgrade them to.

## Contents
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 ** SourceVersion **   <a name="opensearchservice-Type-CompatibleVersionsMap-SourceVersion"></a>
The current version that the OpenSearch Service domain is running.  
Type: String  
Length Constraints: Minimum length of 14. Maximum length of 18.  
Pattern: `^Elasticsearch_[0-9]{1}\.[0-9]{1,2}$|^OpenSearch_[0-9]{1,2}\.[0-9]{1,2}$`   
Required: No

 ** TargetVersions **   <a name="opensearchservice-Type-CompatibleVersionsMap-TargetVersions"></a>
The possible versions that you can upgrade the domain to.  
Type: Array of strings  
Length Constraints: Minimum length of 14. Maximum length of 18.  
Pattern: `^Elasticsearch_[0-9]{1}\.[0-9]{1,2}$|^OpenSearch_[0-9]{1,2}\.[0-9]{1,2}$`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/opensearch-2021-01-01/CompatibleVersionsMap) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/opensearch-2021-01-01/CompatibleVersionsMap) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/opensearch-2021-01-01/CompatibleVersionsMap)