| ERROR | missing primary invocation for ancillary operator |
| CAUSE | The primary invocation corresponding to an ancillary operator is missing. |
| ACTION | Add the primary invocation with the same label as the ancillary operator. |
| ERROR | missing primary invocation for ancillary operator |
| CAUSE | The primary invocation corresponding to an ancillary operator is missing. |
| ACTION | Add the primary invocation with the same label as the ancillary operator. |