AI-generated Key Takeaways
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The ProposalLineItemProgrammaticError in the Ad Manager API is used for errors specifically related to programmatic proposal line items.
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This error type inherits from ApiError and includes details like the field path, trigger data, and a simple error string.
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Specific reasons for this error include invalid product types, unsupported video environments or roadblocking, incorrect creative rotation, and invalid line item or rate types.
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Other reasons for the error involve issues with cost per unit, programmatic creative sources, video creative duration, units, mixing deal types, size mixtures, contracted units, pricing models, buyer issues, environment/platform pairs, and mixing audio and video.
 
Errors associated with programmatic proposal line items.
- Namespace
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https://www.google.com/apis/ads/publisher/v202508 
                        Field | 
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                           ApiError (inherited)
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                            The OGNL field path to identify cause of error.  | 
                  
                        
                           
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                         A parsed copy of the field path. For example, the field path "operations[1].operand" corresponds to this list: {FieldPathElement(field = "operations", index = 1), FieldPathElement(field = "operand", index = null)}.  | 
                  
                        
                           
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                            The data that caused the error.  | 
                  
                        
                           
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                            A simple string representation of the error and reason.  | 
                  
                        
                           ProposalLineItemProgrammaticError
                        
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                            The error reason represented by an enum. Enumerations 
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