AI-generated Key Takeaways
- 
          The document provides a list of possible errors that can occur when using functions. 
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          These errors cover various issues, including invalid formats, data type mismatches, incorrect operands, and unsupported elements. 
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          Specific errors relate to issues with function usage within placeholders and feeds. 
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          Understanding these error types is crucial for debugging and correctly implementing functions. 
Enum describing possible function errors.
| Enums | |
|---|---|
| 
 | Enum unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | The format of the function is not recognized as a supported function format. | 
| 
 | Operand data types do not match. | 
| 
 | The operands cannot be used together in a conjunction. | 
| 
 | Invalid numer of Operands. | 
| 
 | Operand Type not supported. | 
| 
 | Operator not supported. | 
| 
 | Request context type not supported. | 
| 
 | The matching function is not allowed for call placeholders | 
| 
 | The matching function is not allowed for the specified placeholder | 
| 
 | Invalid operand. | 
| 
 | Missing value for the constant operand. | 
| 
 | The value of the constant operand is invalid. | 
| 
 | Invalid function nesting. | 
| 
 | The Feed ID was different from another Feed ID in the same function. | 
| 
 | The matching function is invalid for use with a feed with a fixed schema. | 
| 
 | Invalid attribute name. |