Common API Return Codes

The following table describes the common return codes. To obtain error messages, call the aclGetRecentErrMsg API. You can rectify faults based on the error messages or contact technical support.

**Table 1** Return codes
Return Code	Value	Description
ACLNN_SUCCESS	0	Success
ACLNN_ERR_PARAM_NULLPTR	161001	Parameter verification error. Parameters contain null pointers, which are invalid.
ACLNN_ERR_PARAM_INVALID	161002	Parameter verification error. For example, the two input data types do not meet the data type deduction requirements.
ACLNN_ERR_RUNTIME_ERROR	361001	A memory error occurs when the NPU Runtime API is called.
ACLNN_ERR_INNER_XXX	561xxx	Internal API exception. Common cases are: 561101 (ACLNN_ERR_INNER_CREATE_EXECUTOR): The API fails to create aclOpExecutor. (Possible cause: OS exception). 561102 (ACLNN_ERR_INNER_NOT_TRANS_EXECUTOR): The API does not call uniqueExecutor ReleaseTo. 561103 (ACLNN_ERR_INNER_NULLPTR): A null pointer occurs in the aclnn API.

Parent topic: Common APIs