Dimensions should validate at the following trigger points for Purchase and sales:

Quote:

• Make Order
• Make Invoice
• Release
• Send Approval Request

Blanket Order:

• Make Order
• Release
• Send Approval Request

Order:

• Release
• Create Warehouse Shipment/Receipt
• Create Inventory Put-away/Pick
• Send Approval Request
• Post Shipment/Receipt/Invoice

Invoice:

• Release
• Send Approval Request
• Post

Return Order:

• Release
• Create Warehouse Shipment/Receipt
• Create Return Related Documents
• Send Approval Request
• Post Shipment/Receipt/Invoice

Credit Memo:

• Release
• Send Approval Request
• Post

There can often be some delay between a document being entered and finally being posted. This can cause problems is dimension values are incorrect or more often missing. By placing the dimension validation at the points listed above this reduces problems with Dimensions later on as they are checked far earlier in the process.