SAP B1 blog

In SAP Business One, the base document forms the foundation of the process chain. A customer order For example, the delivery note is the base document for a delivery, and the delivery in turn is the base document for the outgoing invoice. The same applies to purchasing: a purchase order is the base document for the goods receipt, and the goods receipt for the incoming invoice. The link is created via the „Copy to" function, which consistently transfers data from the base document to the target document.

The key characteristic of a base document is its immutability as a reference. Once a subsequent document refers to it, the fields displayed in the base document section are no longer editable. These include the original values for:

- Item number and item description

- Quantity and unit price

- Discount and tax identification number

Total amount

This immutability ensures data integrity and auditability: the original values of a transaction remain traceable and cannot be subsequently manipulated. For accounting, this means an unbroken history from the first quote to the last payment.

The base document section also appears on correction documents. For example, when a credit note is created for an outgoing invoice, the base document section displays the original invoice data – as an unchangeable comparison to the correction.

The document flow in SAP Business One visualises the entire chain of source and target documents, making the process status and origin of every transaction visible at a glance.

A preceding document is not the same as a „first document" in the process. Each document can simultaneously be a target document for a predecessor and a preceding document for a successor — a delivery is a target document for a sales order and a preceding document for an invoice. The role depends on the perspective in the document flow. The crucial point is: A document only functions as a preceding document when a subsequent document refers to it via „Copy to". An isolated document without a link is not a preceding document in the functional sense.

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