Vendor master file best practices: standardise your data

vendor master file
Vendor master file best practices: standardise your data

It could be said that the Vendor Master File is the bible of any Accounts Payable (AP) department. It, more than any other file, is relied upon by all members of the AP team as the ultimate source of truth. However, we know that on average 20% - 25% of all data stored in Vendor Master Files is anomalous.

With so much incorrect data residing in many Vendor Master Files, how can your AP team act with confidence? How can your organization reliably process supplier payments if you cannot be certain that the information contained in your Vendor Master File is accurate and up-to-date?

Eftsure will explore what it takes to achieve and maintain vendor master file integrity to stop fraud in this 3-part series.

  • Part 1: Vendor master file best practices (pre-clean-up)

In this section, we will explore what it takes to assess the current state of your Vendor Master File, as well as the considerations necessary to establish Vendor Master File best practices around how your data should be structured.

In this section, we will explore how you should go about cleaning the existing data in your Vendor Master File in accordance with the rules established in Part 1.

In this section, we will explore what it takes to maintain your Vendor Master File, with a particular focus on adding new suppliers to the database and updating existing suppliers as necessary.

2. Establish naming conventions – organisations

Perhaps the most important data point within your Master Vendor File is the organization name.

It is critical that every member of the Accounts Payable function enters organization names consistently to avoid duplicate payments and to reduce the risk of fraud.

The Australian Government has developed a comprehensive style guide that covers how organizations should be named. It can provide a useful template for how your organization enters organization names into your Master Vendor File.

As an overriding principle, you should seek to follow the way your supplier writes their own organization’s name. The names of organizations can change. The most efficient way to confirm an organization’s name is to check its website, annual report, or letterhead. If this is unsuccessful, there are other reliable services, including:

Australian Government entities: Government online directory

Directory entries contain links to departmental pages listing annual reports. Annual reports are a good way to find the former names of departments. The government online directory includes the Australian Government Organizations Register and the directories of state and territory governments. There are also website directories for some local governments.

Non-government entities:

For all entities:

4. Establish vendor master data field standards

Depending on the system you use for your Vendor Master File, it may be possible to set specific rules that restrict how data is entered.

These can be particularly useful for ensuring consistency.

For example, you can limit the number of characters that can be entered into a field, or the type of characters. You may also be able to stipulate whether all letters in a particular field appear in capital or lower case.

Wherever possible, if you can set up fields as drop-down menus (for example, have States and Territories of Australia as a drop-down menu), this can also aid in establishing consistency.

These types of rules can be particularly useful when it comes to fields for phone numbers, BSBs, Account Numbers, or government registration numbers, such as the ABN, CAN, TFN, etc. By preventing staff from entering hyphens, spaces, or other alphanumeric symbols, it is possible to ensure greater consistency.

5. Banking records accuracy

Ensuring the accuracy of supplier banking records in your Vendor Master File is critical to preventing incorrect payments and fraud.

More than any other data points in your Vendor Master File, these are the records that are most vulnerable to malicious actors who will seek to manipulate them for financial gain. When preparing to clean up your Vendor Master File, you need to carefully consider strategies for the ongoing veracity of supplier banking records.

That’s why it's best practice to demand the implementation of continuous controls monitoring. You cannot assume that because you verified a supplier’s banking records at the onboarding stage, that these records have not subsequently changed or been tampered with.

Segregation of duties and restricting access to these records on a Need-to-Know basis will limit the risk. However, in addition, you should also have a system in place that can efficiently verify these records in real-time, immediately prior to processing a payment.

By integrating Eftsure into your accounting processes, you will gain visibility into whether other organizations have used the same banking records to pay the same supplier. If so, you can be confident that the banking records are accurate, even if there has been a significant time lapse since the supplier was onboarded. When processing large volumes of invoices, Eftsure saves your Accounts Payable team countless hours of manual verifications, giving you significantly greater assurance than the alternative of manual spot-checks.

6. Define inactive suppliers

One of the key objectives when undertaking a clean-up of your Vendor Master File is to identify the inactive suppliers.

Whether you opt to delete these suppliers from your files, or simply mark them as inactive, is a decision each organization needs to make. Making them inactive retains all their records in your systems but ensures no new invoices will be assigned to them.

Determining which suppliers should be considered inactive will vary for each organization. Typically organizations exclude suppliers with no activity in the last 12 or 18 months, except those added in the last 90-180 days.

In addition, you should also exclude supplier records that can be identified as:

  • Employees

  • Already marked for purge or as inactive

  • One-time suppliers

  • Suppliers set up for making customer refunds

  • Suppliers created from automated feeds from other systems

Once you have clear definitions for which suppliers should be defined as “inactive,” you will be able to proceed to the clean-up stage.

Address ConventionStandards
Building NameThe full name used to identify the physical building or property. This information is usually not abbreviated and should include any reference to a wing or other components of a building complex, if applicable. Ideally, this information is printed in uppercase, though using uppercase for the first character and lowercase for subsequent characters is acceptable. One or two spaces should be left between components, with a preference for two spaces, e.g., North Wing Treasury Building.
Building / Complex Sub-UnitThe specification of a separately identifiable portion within a building complex or marina, with its associated number or identifier to clearly distinguish it. It can be depicted by numerals, alpha characters, or a combination. Ideally, use uppercase, though using uppercase for the first character of each word and lowercase for subsequent characters is acceptable. One or two spaces should be left between components, with a preference for two spaces, e.g., Flat 2 17 Jones St. A forward slash (/) may only be used to separate an apartment, flat, or unit number from a thoroughfare number.
Floor / LevelDescriptors used to identify the floor or level of a multi-storey building or complex. The Floor/Level is positioned as the first item, located on the same line as the House/Property Number and Street Name. It can also be placed on a separate line above the House/Property Number and Street Name if necessary. Ideally, use uppercase, though using uppercase for the first character and lowercase for subsequent characters of each word is acceptable. One or two spaces should be left between components, with a preference for two spaces, e.g., Level 7 17 Jones St. A forward slash (/) should not be used to separate a floor or level number from a thoroughfare number.
House / Property NumberThe numeric/alpha reference number of a house or property, also referred to as a street number, must be positioned before the Street Name and Type. If the house/property number includes a range, the applicable numbers should be included, separated by a hyphen (-) with no spaces between numerals, e.g., 17-19. Ideally, any alpha characters should be in uppercase, with no spaces between numerals, e.g., 11B.
Lot / Section NumberThe Lot/Section Number is positioned before the Street Name and Type, located on the same line. Ideally, it should be in uppercase, though using uppercase for the first character and lowercase for subsequent characters is acceptable.
Street Name and TypeThe full street name used to identify the street location of the property, together with the thoroughfare type. Only one street name should be used. Ideally, this information should be in uppercase, though using uppercase for the first character of each word and lowercase for subsequent characters is acceptable. The street name should be spelled out in full, with the exception of some prefixes based on common acceptance, e.g., St Kilda Rd and McKillop St. In certain circumstances, street names may be suffixed, e.g., Browns Rd West or Browns Rd W.
Postal Delivery TypeWhere applicable, this identifies a specific postal address and the service number. Ideally, the alpha characters should be in uppercase, though using uppercase for the first character of each word and lowercase for subsequent characters is acceptable. No punctuation should be used in this line.
Place Name / Suburb / LocalityThe full name of the place or Post Office of delivery containing the specific address, which may include a Delivery Centre (DC) or a Business Centre (BC). This information must be printed in uppercase with no punctuation. Generally, the place name is not abbreviated, though certain elements may be abbreviated based on common acceptance, e.g., MT for Mount and ST for Saint.
State / TerritoryThe defined State or Territory in Australia (in abbreviated format) where the specific place/address is located. Must be printed in uppercase with no punctuation.
PostcodeA four-digit numeric descriptor for a postal delivery area, aligned with place name, suburb, or locality, and in some cases, a unique Postal Delivery Type. All numeric, with leading zeros displayed.

Vendor master file management services: how can Eftsure help?

The Vendor Master File is a business-critical system that cannot be neglected. The risks associated with incorrect data are that you will make incorrect payments and be vulnerable to fraud.

Ongoing data hygiene is a must. However, this can be a time-consuming activity. As a result, many Accounts Payable departments delay dealing with the issue. This only exacerbates the risks.

Eftsure’s Vendor Master File Health Check service is the initial step for all organizations that integrate our platform into their accounting processes. We undertake a thorough cleansing of your Vendor Master File data, with particular emphasis on verifying supplier banking records.

This process not only saves your team a significant amount of time, but it also gives you confidence that your data is accurate and up-to-date.

In the next two parts of this series, we will explore the process of Vendor Master File clean-up, and post-clean-up strategies to maintain data integrity.

Master vendor file pre-clean-up

Once you have decided that you need to undertake a comprehensive clean-up of the data contained in your Vendor Master File, you firstly need to assess what information needs cleaning and the rules that will govern how you maintain your data moving forward.

In many organizations, once a supplier is onboarded into a Vendor Master File, they typically stay there forever. This often results in a large number of “inactive” suppliers. This need not necessarily be a problem, however, for any organization struggling to maintain data hygiene standards, having large volumes of redundant data can be an avoidable burden.

It is important to bear in mind that some suppliers may be “inactive” for a protracted period of time, only to become “active” again at a later date. When this occurs, often a new entry for the supplier will be created in the Vendor Master File. This can potentially raise a number of problems, particularly if your organization does not enforce strict supplier naming conventions. With two or more entries in a Vendor Master File for the same supplier, you run the risk of duplicate payments.

Read more about the importance of naming conventions for reducing the risk of duplicate payments here.

Apart from avoiding duplicate payments, having suppliers listed multiple times in your Vendor Master File can put you at greater risk of internal threats. Should a maliciously inclined employee become aware of an inactive supplier account, they may use this as a cover for fraudulent activities.

Ideally, any supplier accounts that have been inactive for over 12 months should be deactivated in your Vendor Master File. You should, of course, retain vendor records of all prior transactions. However, by deactivating the account so no new records can be added to it, you mitigate the risk of both duplicate payments and internal fraud.

How often should I clean my vendor master file?

This is a question we often get asked at Eftsure.

Ideally, data hygiene should be something that takes place continuously. It is an integral part of the Procure-to-Pay process. However, the reality is that AP staff are busy, and all too often data hygiene standards slip.

Maintaining the integrity of the data in your Vendor Master File really needs to be an ongoing process. Set-and-forget is not a viable option. That’s because you are always going to be adding and removing suppliers, not to mention updating existing supplier records. Furthermore, whilst you verify supplier details, including banking information, when onboarding them, there may be a long period of time before you need to process payments to them. In the interim, hackers or malicious insiders may manipulate the data in the Vendor Master File – causing you to send payments to the wrong recipient. That’s why continuous controls around data integrity are absolutely essential.

Even though organizations should have systems in place to allow ongoing data hygiene, there are events that necessarily trigger a thorough clean-up of Vendor Master File data. These events may include:

  • The adoption of a new ERP or accounting system

  • A merger

  • An acquisition

  • The hiring of a new CFO or Accounts Payable manager

Such events should be seen as an opportunity to undertake a deep-clean of your data, enabling you to adopt best practices moving forward.

Vendor master file management best practices

When it comes to data integrity in your Vendor Master File, having clearly established rules for your entire AP team is absolutely critical.

The procedures for Vendor Master File data should be integrated into your broader Accounts Payable policy. These procedures should be formally written, along with associated implementation guidelines, with training provided to all staff members.

This is the only way to ensure that your entire team handles data in a consistent manner, which is essential for maintaining data integrity and limiting the risks of losses through either fraud or error.

1. Establish address conventions

Best practices require establishing clear conventions for entering supplier addresses in your Master Vendor File, even in an era when communications are overwhelmingly conducted electronically.

For suppliers with multiple locations, it is important to ensure you register the Australian headquarters, rather than a branch or department address. This practice should be followed even if your contact is based at a location other than the headquarters.

3. Establish naming conventions – individuals

The legal name of the primary contact at a supplier should also be included in your Vendor Master File.

Whilst naming conventions around the primary contact are not as critical as the organization name, it is nonetheless important to establish common standards.

Vendor master file template

One of the easiest ways to set standards for addresses is to use the standards set by Australia Post. They have given a lot of thought to establishing address naming conventions, so it makes sense to follow their template guide.

Address conventions

Organisation ConventionStandards
Names all in lower caseWhen the organization name is in all lower case, use an initial capital for these names in your Vendor Master File. This helps people identify the name as a proper noun. For example, use "Eftsure" rather than "eftsure".
Medial capital lettersSome names start with a lower case letter but have a medial capital (for example, "eBay"). Write the name the same way, even at the beginning of a sentence. A medial capital is enough to identify the name as a proper noun.
Punctuation and logogramsPay attention to the use of capital letters, punctuation (such as apostrophes), and logograms (such as "&"). Ensure all words in the name are included and don't add any additional words.
Names all in upper caseSome organization names appearing on the Australian Business Register are in all capitals. Write the name in all capitals as the organization does.
Shortened namesUse the organization's shortened form only if the organization regularly uses it in its own content. For example, the Department of Home Affairs uses "Home Affairs" as the shortened form, but not "DHA". However, Defence Housing Australia does use the initialism "DHA", so using it to refer to that organization would be appropriate. Don't use full stops between individual letters in an abbreviated name (e.g., "IBM" rather than "I.B.M."). Spell out the shortened form the first time unless the organization's name is known only by the shortened form, such as "IKEA".
Company designationsSome organizations use shortened forms such as "Ltd", "Pty Ltd", "Co", and "Inc" as part of their legal name. Others use the spelled-out forms. Don't add a full stop at the end of "Co" and "Inc" unless they finish a sentence. Don't insert a comma between the name of the organization and the company designation (e.g., "Eftsure Pty Ltd", not "Eftsure, Pty Ltd").
ApostropheUse an apostrophe only when it forms part of the official name of an organization, as in "Laing O'Rourke".
TheHandle "The" consistently. As a rule, only use "The" when the supplier uses it in their official name.
Primary Contact ConventionStandards
Person TitleThe Person Title is the first item, positioned before the Given Name. Ideally, it should be in uppercase, though using uppercase for the first character and lowercase for subsequent characters is acceptable.Accepted abbreviations:
  • Doctor: DR
  • Honourable: HON
  • Mister: Mr
  • Misses/Miss: Ms
  • Reverend: Rev
Given NameA legal name given, also referred to as a Christian name or first name. If initials are used, they should be printed in uppercase. Full stops can be used to separate initials, if required. If the full name is used, it should ideally be printed in uppercase, though using uppercase for the first character and lowercase for subsequent characters is acceptable. It is also acceptable to mix a given name in full with initials, e.g., Robert J.
Family NameThe family name of the addressee, also referred to as the last name or surname. This information should not be abbreviated unless the abbreviation is based on common acceptance. Ideally, it should be in uppercase, though using uppercase for the first character and lowercase for subsequent characters is acceptable. Dual family names should be separated by a hyphen (-).

Organisation conventions

Primary contact conventions

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Author

Niek Dekker

Published

2 Jun 2025

Reading Time

16 minutes

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