While creating a New Planning Proposal for a Product, the following error message is triggered: Source Of Supply For Purchase Proposal XXX Not Valid (XXX represents the Purchase Proposal ID).
SAP Business ByDesign
Reproducing the Issue
- Navigate to the Supply Planning Work Center.
- Go to the Products view.
- Find and select the relevant Product and click on the Open button.
- In the opened Product Planning Details view, under Supply and Demand List, click the New Planning Proposal button.
- Specify the Quantity and press Enter key on your keyboard.
- The system triggers the error message: Source Of Supply For Purchase Proposal XXX Not Valid.
The cause will be explained with the following example:
You have maintained a List Price as Source of Supply for the Product. The List Price is Released and valid and you are expecting this List Price to be picked for Planning Proposals.
You have also maintained for the Product a Procurement/Supplier Lead Time of 5 days for example. In the Purchase Proposal, you have given an Availability Date as today. To fulfill this Demand the system picks the valid Source of Supply deducting 5 days from today's date. Whatever is valid Source of Supply on that day considering the Lead Times is shown as Source of Supply. When you click on the Change source of Supply button the system will show an error that the Source of Supply is not valid or the Source of Supply will not be displayed, because on the given time (in this example 5 days ago) the new List Price was still not valid.
This is also true for the Purchase Proposal created via the Planning Run. The Source of Supply is not assigned as the system does not find a valid Source of Supply for the maintained Availability Date.
To resolve the issue, it is recommended to modify either the Procurement/Supply Lead Time or the Availability date, in order for the system to be able to pick a Source of Supply that is valid for the given date.
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