1# Distributed Data Object Error Codes 2 3> **NOTE** 4> 5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](errorcode-universal.md). 6 7## 15400001 Failed to Create the In-Memory Database 8 9**Error Message** 10 11Create table failed. 12 13**Description** 14 15The in-memory database fails to be created. 16 17**Possible Causes** 18 19An object with the same session ID already exists. 20 21**Solution** 22 23Check for the object has been added to the same session. 24