AI-generated Key Takeaways
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          Updating a CustomerManagerLink's status can accept a pending invitation (ACTIVE), decline it (REFUSED), or terminate the link (INACTIVE). 
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          The update_maskfield is used to specify which fields of the CustomerManagerLink are being modified.
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          The operationfield is a union field and must contain exactly one mutate operation, which is anupdatein this context.
Updates the status of a CustomerManagerLink. The following actions are possible: 1. Update operation with status ACTIVE accepts a pending invitation. 2. Update operation with status REFUSED declines a pending invitation. 3. Update operation with status INACTIVE terminates link to manager.
| Fields | |
|---|---|
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 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
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 | Update operation: The link is expected to have a valid resource name. |