Function calling with multiple parametrs dosen't seem to work

[paperclip369]

Function calling

@FunctionDef(name = "fetch_places_by_brand", description = "Fetch Place by Brand")
public static String fetch_places_by_brand(
@FunctionParam(name = "brand", description = "brand it is mandatory ") String brand,
@FunctionParam(name = "conversationId", description = "conversationId from question ") String conversationId){
...}

throws exception

receive payload:{
"error": {
"message": "Invalid schema for function 'fetch_places_by_brand': {'$ref': '$.tools[0].function.parameters.properties.conversationId.enum'} is not of type 'array'.",
"type": "invalid_request_error",
"param": "tools[0].function.parameters",
"code": "invalid_function_parameters"
}
}

Fixing this would be helpful to use agents flex
Model: gpt3.5 or gpt4o