Sir, my understanding is as follows:
1. Invoice has to be as per section 31 which reads as follows:
(1) A registered person supplying taxable goods shall, before or at the time of,-
(a) removal of goods for supply to the recipient, where the supply involves movement of goods; or
(b) delivery of goods or making available thereof to the recipient, in any other case,
issue a tax invoice showing the description, quantity and value of goods, the tax charged thereon and such other particulars as may be prescribed:
Therefore, as per GST law invoice can be issued before the removal of goods. Once such sale is made, it has to be shown in the GSTR-1 of March 2023.
In my limited knowledge of AS-9 & IndAS 18, sale is to be recognised when the risk and reward of ownership is transfered. I am extracting relevant portion of AS-9:
6. Sale of Goods 6.1 A key criterion for determining when to recognise revenue from a transaction involving the sale of goods is that the seller has transferred the property in the goods to the buyer for a consideration. The transfer of property in goods, in most cases, results in or coincides with the transfer of significant risks and rewards of ownership to the buyer. However, there may be situations where transfer of property in goods does not coincide with the transfer of significant risks and rewards of ownership. Revenue in such situations is recognised at the time of transfer of significant risks and rewards of ownership to the buyer. Such cases may arise where delivery has been delayed through the fault of either the buyer or the seller and the goods are at the risk of the party at fault as regards any loss which might not have occurred but for such fault. Further, sometimes the parties may agree that the risk will pass at a time different from the time when ownership passes.
Ind AS 18 is extracted as under:
14 Revenue from the sale of goods shall be recognised when all the following conditions have been satisfied:
(a) the entity has transferred to the buyer the significant risks and rewards of ownership of the goods;
(b) the entity retains neither continuing managerial involvement to the degree usually associated with ownership nor effective control over the goods sold;
(c) the amount of revenue can be measured reliably;
(d) it is probable that the economic benefits associated with the transaction will flow to the entity; and
(e) the costs incurred or to be incurred in respect of the transaction can be measured reliably.
Thus, the sale maybe recognised in books only in FY 2023-24 when the actual risk and reward of ownership is transfered.
Thus, there may be reconciliation difference between your GST turnover and turnover as per books.
As ld. Amit Ji suggested, it would be suggested to raise e-invoice in April 2023 to avoid these reconciliation differences.