OpenSearch encountered a mapping parsing exception while creating an index

[CCTV-six]

Describe the bug

org.opensearch.index.mapper.MapperParsingException: Failed to parse mapping [my_index]: Root mapping definition has unsupported parameters: [my_custom_field : {type=keyword}]

Related component

Indexing

To Reproduce

none

Expected behavior

Can smoothly create or update indexes without mapping parsing exceptions

Additional Details

Plugins
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Screenshots
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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

Additional context
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[mgodwan]

Could you please share the steps to reproduce i.e. the API call, payload, OpenSearch version, etc,?

[peternied]

[Triage - attendees 1 2 3 4 5 6 7 8]
@CCTV-six Thanks for creating this issue; however, it isn't being accepted due to not being clear there is an issue with the feature, please include reproduction steps and details as to why an error response shouldn't be expected. Please feel free to open a new issue after addressing the reason."