| Param name | Description | 
|---|---|
| 
      custom_metadata_field  required  | 
    
      
 The ID of the metadatum field that metadatum is going to be related to. Validations: 
  | 
  
| 
      custom_metadatum  optional , nil allowed  | 
    
      
         Validations: 
  | 
  
| 
      custom_metadatum[value]  optional , nil allowed  | 
    
      
 The value of the metadatum. Validations: 
  |