S. 263: Commissioner-Revision of orders prejudicial to revenue–No revision where Assessing Officer rightly made no disallowance under section 14A as interest-free funds exceeded investments-Commissioner cannot invoke section 263 on an issue which is the subject matter of appeal before the Commissioner (Appeals)-Failure to refer specified domestic transaction to Transfer Pricing Officer does not render assessment erroneous where CBDT Instruction is not attracted. [S. 14A, 92BA, 92CA 250, Rule 8D]