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Job numbers

Best practice for job numbers

Why have job numbers at all?

  • Job numbers can be useful reference numbers in estimates, invoices and correspondence with the customer.

  • They can be passed on to suppliers when commissioning, who then include the job number on their invoices. This greatly simplifies the allocation of external services to jobs.

Contact us if you have further questions on this topic.

We recommendthis job number pattern

The numbers consist of ‌ <Customer abbreviation>-<four-digit sequential number>

TUI-0029‌ ‌BAB-0002

The four-digit sequential number therefore counts all jobs within a customer.

There is deliberately no year included in the number, as projects often continue across calendar years. A year would then only be an indicator of the year the job was created; this information is accessible anyway via agency software.

Further advantages of this pattern

  • The number is suitable as a filename - even on a web server

  • In a file system, job numbers automatically sort by customer and sequential number

  • The customer abbreviation defines a separate number range for the customer


  • The customer cannot deduce other agency jobs

  • If customer abbreviations are established in the agency, it is easy to search by them

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