AI-generated Key Takeaways
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This document outlines operations for conversion custom variables, specifically creation and update.
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The
update_maskfield is used to specify which resource fields are modified during an update operation. - 
          
The
operationfield determines the type of mutate operation, which can be eithercreateorupdate. - 
          
A
createoperation does not require a resource name, while anupdateoperation requires a valid resource name for the conversion custom variable. 
A single operation (create, update) on a conversion custom variable.
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                   FieldMask that determines which resource fields are modified in an update.  | 
              
Union field 
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                   Create operation: No resource name is expected for the new conversion custom variable.  | 
              
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                   Update operation: The conversion custom variable is expected to have a valid resource name.  |