1# Distributed Data Object Error Codes
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3> **NOTE**
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5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md).
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7## 15400001 Failed to Create the In-Memory Database
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9**Error Message**
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11Failed to create the in-memory database.
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13**Description**
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15The in-memory database fails to be created.
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17**Possible Causes**
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19The same session ID is set for another distributed data object.
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21**Solution**
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23Use [genSessionId](../../reference/apis-arkdata/js-apis-data-distributedobject.md#distributeddataobjectgensessionid) to generate a random session ID to avoid using an existing session ID.
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