Hi Nishant ,
Their is standard sap delivered functionality in SRM called Limit PO which you can used type blanket PO of ECC where you can create po for value and time limit and within limit value time you can do invoice against PO .
- You can process the value limit (maximum purchase order value that goods or services must not exceed) and the expected value (estimated value of the purchaser, either under or the same as the value limit). The expected value serves to update the commitment in Controlling and the budget is reduced by this amount.
- You can spread the value limit over partial limits (contract limits and remaining limits) or establish an undefined value limit. The sum of the contract limits created may be greater than the value limit. The system checks and ensures that the value of the ordered items is not greater than the value limit.
- You can assign the relevant product category and define the period in which the goods should be delivered or the service performed.
Thansk
Sharad