CustomParameter
    
    
      
    
    
      
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          A mapping that can be used by custom parameter tags in a tracking_url_template, final_urls, or mobile_final_urls.
        
        
          
            
              
              
            
            
              
                | Fields | 
            
            
              
                | key
 | string
 The key matching the parameter tag name. | 
              
                | value
 | string
 The value to be substituted. | 
            
          
        
      
    
  
  
  
    
  
 
  
    
    
      
       
    
    
  
  
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  Last updated 2025-10-10 UTC.
  
  
  
    
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