1e41f4b71Sopenharmony_ci# Ads Service Framework Error Codes 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci> **NOTE** 5e41f4b71Sopenharmony_ci> 6e41f4b71Sopenharmony_ci> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci## 21800001 Internal System Error 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci**Error Message** 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ciSystem internal error. 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci**Description** 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ciThis error code is reported if an internal system error occurs. 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci**Possible Causes** 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ciFailed to connect to the OAID service. 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci**Procedure** 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ciCheck whether the service is running properly. 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci## 21800003 Ad Loading Failure 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci**Error Message** 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ciFailed to load the ad request. 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci**Description** 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ciThis error code is reported if loading the ad fails. 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci**Possible Causes** 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ciThe network connection is abnormal, or an ad request parameter is incorrect. 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci**Procedure** 43e41f4b71Sopenharmony_ci 44e41f4b71Sopenharmony_ciCheck the network status, and correct the ad request parameters. 45e41f4b71Sopenharmony_ci 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ci## 21800004 Ad Display Failure 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci**Error Message** 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ciFailed to display the ad. 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ci**Description** 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ciThis error code is reported if displaying the ad fails. 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ci**Possible Causes** 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ciThe network connection is abnormal. 60e41f4b71Sopenharmony_ci 61e41f4b71Sopenharmony_ci**Procedure** 62e41f4b71Sopenharmony_ci 63e41f4b71Sopenharmony_ciCheck the network status. 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ci 66e41f4b71Sopenharmony_ci## 401 Incorrect Ads Request Parameter 67e41f4b71Sopenharmony_ci 68e41f4b71Sopenharmony_ci**Error Message** 69e41f4b71Sopenharmony_ci 70e41f4b71Sopenharmony_ciInvalid input parameter. Possible causes:1. Mandatory parameters are left unspecified. 71e41f4b71Sopenharmony_ci2.Incorrect parameter types. 3.Parameter verification failed 72e41f4b71Sopenharmony_ci 73e41f4b71Sopenharmony_ci**Description** 74e41f4b71Sopenharmony_ci 75e41f4b71Sopenharmony_ciThis error code is reported if an ads request parameter is incorrect. 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ci**Possible Causes** 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ciAds request parameters fail the verification. 80e41f4b71Sopenharmony_ci 81e41f4b71Sopenharmony_ci**Procedure** 82e41f4b71Sopenharmony_ci 83e41f4b71Sopenharmony_ciCheck whether the ads request parameters are correct. 84e41f4b71Sopenharmony_ci 85e41f4b71Sopenharmony_ci 86e41f4b71Sopenharmony_ci## 801 Ad Request Failure 87e41f4b71Sopenharmony_ci 88e41f4b71Sopenharmony_ci**Error Message** 89e41f4b71Sopenharmony_ci 90e41f4b71Sopenharmony_ciDevice not support 91e41f4b71Sopenharmony_ci 92e41f4b71Sopenharmony_ci**Description** 93e41f4b71Sopenharmony_ci 94e41f4b71Sopenharmony_ciThis error code is reported when the device supports the target SysCap but does not support a specific API. 95e41f4b71Sopenharmony_ci 96e41f4b71Sopenharmony_ci**Possible Causes** 97e41f4b71Sopenharmony_ci 98e41f4b71Sopenharmony_ciThe device does not support the API. 99e41f4b71Sopenharmony_ci 100e41f4b71Sopenharmony_ci**Procedure** 101e41f4b71Sopenharmony_ci 102e41f4b71Sopenharmony_ciCheck whether the device supports the API. 103