92004: Invalid language code

This error appears when you create Content with a language value that is not valid for the resource. The Content API uses a two-letter ISO 639-1 language code, and Content Templates are limited to one language per template.

• You sent a language value that is not a valid two-letter ISO 639-1 code.
• The language you chose is not supported for the Content template you are creating or updating.

• Set language to a supported two-letter ISO 639-1 code, such as en.
• If you need to send content in more than one language, create a separate Content template for each language.

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