On Transact SQL language the Msg 245 Level 16 - Conversion failed when converting the varchar value means that you insert varchar values into an int column.
Msg 245 Level 16 Example:
We have the table TEST:
				
				
							
			
USE model;
				
GO
				
CREATE TABLE TEST(
				
     ID INT NOT NULL PRIMARY KEY, 
				
     NAME VARCHAR(10) NOT NULL );
				
GO
				
Invalid insert:
				
				USE model;
				
			
GO
				
INSERT INTO TEST(id, name) VALUES ('abc', 'Olivia');
				
GO
				
| Message | 
|---|
| Msg 245, Level 16, State 1, Line 1 | 
| Conversion failed when converting the varchar value 'abc' to data type int. | 
Correct insert:
				
				USE model;
				
			
GO
				
INSERT INTO TEST(id, name) VALUES (1, 'Olivia');
				
GO
				
| Message | 
|---|
| (1 row(s) affected) | 
Other error messages:
- Conversion failed when converting date and/or time from character string
- Is not a defined system type
- Unknown object type used in a CREATE, DROP, or ALTER statement
- Cannot insert the value NULL into column
- Cannot insert explicit value for identity column in table
- The INSERT statement conflicted with the FOREIGN KEY constraint
- The DELETE statement conflicted with the REFERENCE constraint