Hello Rajendra,
This error message could be related with the format of the date in the file that is is not accordingly with the one define in the Bank Statement Import.
To validated the format the the system is prepared to received, could you please check the following steps:
1. Search for Data Exchange Definition and open the corresponding one, that is associated in your Bank Account:

2. Go to the Column Definitions Tab and in the column 4,please validate if you have the correct Data Format and Data Formatting Culture

Hope this information will help you to move forward.
Kind regards,
Laeticia Cunha
Please see our Dynamics 365 Business Central Support Team Blog for helpful information:
https://dynamics.microsoft.com/en-us/business-central/capabilities/
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