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The supplier master

The supplier master holds one record for every company that invoices you. Three things come out of it every day: who the issuer is, which nominal accounts their spend goes to, and the details you send them an order with.

Database › Supplier master

The list

The table shows, per supplier: tax number, trading name, address with postcode, nominal account, reference, payment date, payment method, payment terms and, on practice accounts, which client they belong to.

The search box at the top finds them by tax number or registered name, and there is also a filter by practice client for working on one company at a time. The tax number and registered name columns can be sorted.

There are five actions on the bar: New, Merge, Delete, Import and Export. Merge and Delete need rows ticked; Merge needs at least two.

The record, field by field

FieldWhat it isRequired
Trading nameThe name the supplier is known by.Yes
Tax numberTheir tax reference.No, but it is what keeps duplicates out
Registered nameThe full legal name.No
ReferenceTheir supplier code in your management system.No
Address and postcodeTheir registered address.No
ContactTwo email addresses, two phone numbers and a WhatsApp number.No, unless you send orders
PaymentDate, method and terms.No, but without them there are no due dates
Nominal accountsSupplier account and expense account.No

The only field the record insists on is the trading name. The tax number is not required, but it is what the supplier is recognised by on incoming documents: without it, repeated records are easy to end up with.

The two nominal accounts

The record holds two different accounts, and they are easily confused:

AccountWhat it stands for
Supplier accountWhat you owe that supplier. It is where the debt sits.
Expense accountWhere their invoices' spend usually goes.

Both are chosen with a search that finds accounts by code or by name in the account's chart of accounts. They are not typed: you pick them from the list.

Setting them on the record saves giving them document by document: that supplier's spend goes, by default, to whatever you set here.

Practice client

On accountancy practice accounts, each supplier belongs to one of the clients you handle. The field is filled in with a search by tax number or name, and the list lets you filter on it.

It is what keeps each company's masters apart: a supplier of client A does not get mixed up with client B's, even where it is the same issuing company.

Importing from Excel

The import takes Excel or CSV files up to five megabytes. The format the screen asks for:

ColumnsWhich
RequiredTax number, trading name
OptionalRegistered name, reference, address, postcode
The linkThe practice client's tax number, which attaches the supplier to its client automatically
ContactEmail, second email, phone, second phone, WhatsApp

The WhatsApp column has to be formatted as text in Excel. The screen warns you: in international format with the country code, and if the cell is left as a number the + is lost and the row is rejected. It is the number purchase orders are sent to.

It is the quick way to get an account going: instead of waiting for documents from every supplier, you upload the whole list with their contact details and terms already in.

Exporting

The export button downloads the master to Excel. It is useful for seeing in one go which suppliers are incomplete, no email, no payment terms, no account, and deciding where to start filling them in.

Where the suppliers come from

Like the other masters, it fills itself: when a document arrives from an issuer that did not exist, their record is created from what the document carries. The other fields, accounts, payment terms, contact, stay empty until somebody fills them in.

Hence the maintenance is always the same: finish off the new suppliers and merge the ones that have come in twice.

Things that come up

What you seeWhyWhat to do
The same supplier appears twice It arrived with the tax number read wrongly or the name written differently. Merge the records, choosing which is the master.
Rows rejected on import The tax number or trading name is missing, or the WhatsApp number lost its country code. Format the WhatsApp column as text and fill in the required columns.
Spend does not go to the account you expected The record has no expense account set. Set it on the supplier's record.
An order cannot be sent The main email address or the WhatsApp number is missing. Fill the contact details in.
A supplier is not in the list There is a practice client filter on. Clear the filter and search again.

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Last reviewed: 11 September 2026 · The Dijit.app team