AI-generated Key Takeaways
- 
          LineItemOperationError.Reasonlists the possible reasons for errors when performing operations on Line Items within various services like ForecastService, LineItemService, and OrderService.
- 
          These reasons cover various scenarios such as insufficient permissions, the line item's current state, missing active creatives, legacy types, delivery status, and the associated company's credit status. 
- 
          The list includes a generic UNKNOWNreason for values not exposed in the requested API version.
The reasons for the target error.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202502
| Enumeration | Description | 
|---|---|
| NOT_ALLOWED | The operation is not allowed due to lack of permissions. | 
| NOT_APPLICABLE | The operation is not applicable for the current state of the LineItem. | 
| HAS_COMPLETED | The LineItem is completed. A LineItemAction cannot be applied to a line item that is completed. | 
| HAS_NO_ACTIVE_CREATIVES | The LineItem has no active creatives. A line item cannot be activated with no active creatives. | 
| CANNOT_ACTIVATE_LEGACY_DFP_LINE_ITEM | A LineItem of type LineItemType.LEGACY_DFP cannot be Activated. | 
| CANNOT_ACTIVATE_UNCONFIGURED_LINE_ITEM | A LineItem with publisher creative source cannot be activated if the corresponding deal is not yet configured by the buyer. | 
| CANNOT_DELETE_DELIVERED_LINE_ITEM | Deleting an LineItem that has delivered is not allowed | 
| CANNOT_RESERVE_COMPANY_CREDIT_STATUS_NOT_ACTIVE | Reservation cannot be made for line item because the
                LineItem.advertiserId it is associated with has
                Company.creditStatus that is not ACTIVEorON_HOLD. | 
| CANNOT_ACTIVATE_INVALID_COMPANY_CREDIT_STATUS | Cannot activate line item  because the LineItem.advertiserId
                it is associated with has Company.creditStatus that is not ACTIVE,INACTIVE, orON_HOLD. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |