1# Widget Management Subsystem Changelog
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3## cl.form.1 Deleted Error Codes That Are No Longer Used
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5**Access Level**
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7System API
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9**Change Reason**
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11For **FormExtensionContext.startAbility**, error code 16500101 is no longer used. When a non-system application uses a system API, error code 202 is reported.
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13**Change Impact**
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15The external declaration of the APIs of API version 12 is affected, but the API functionalities are not affected. You can determine whether to adapt to the APIs.
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17**API Level**
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1912
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21**Change Since**
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23OpenHarmony SDK 5.0.0.17
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25**Key API/Component Changes**
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27The comments of the following modules are updated. For details, see the corresponding external API declaration and API development guide.
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29| Module                               | Description of Major Changes                                              |
30| ----------------------------------- | ------------------------------------------------------------ |
31| application/FormExtensionContext    | Deleted error code 16500101 and its return description.|
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33**Adaptation Guide**
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35When a non-system application uses a system API, error code 202 is reported. Error code 16500101 is no longer used.
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