{
"error": {
"code": 400,
"message": "Target language can't be equal to source language.",
"status": "INVALID_ARGUMENT",
"details": [
{
"fieldViolations": [
{
"field": "source_language_code",
"description": "Source language: zh-CN"
},
{
"field": "target_language_code",
"description": "Target language: zh-TW"
}
]
}
]
}
}