Time-Independent Conditions in SAP MM

Use

(Note: up to Release 3.1H "time-independent conditions" were termed "document conditions").
No validity periods and scales can be defined for these conditions. The conditions in purchase orders are always time-independent. You can determine whether time-dependent or time-independent conditions can be maintained in quotations and scheduling agreements via the document type in Customizing. (<Document> ® Define document types.)

Subtotals (net price, effective price) are created in the case of time-independent conditions.

SAP recommends working with time-dependent conditions for quotations and scheduling agreements, since these provide a wider range of processing options.