Renames a recording and, when you send file, replaces its audio. name is required on every call, even when you are only changing something else, and the text-to-speech fields are replaced wholesale: tts_text, tts_ssml, tts_voice, tts_provider, and tts_editor_state are cleared whenever you omit them, and tts_speed and tts_instructions are always cleared. New audio is converted to WAV and stored under the recording's existing file name, so the recording keeps its id and everything that uses it (phone menus, ring groups, extensions, numbers, call flows) plays the new audio right away, even while it is in use. Unless you also send tts_ssml, the new audio is transcribed and the transcript stored as the recording's text. Only a greeting a call flow generated for itself can't be edited here (409 managed_by_call_flow). Requires an API key with the Admin role.
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