The introduction of the FloraHolland customer number is likely to affect your company software. Depending on the user group and the specific application, the following changes will be necessary:
Step 1: Modifying the software to process new (Florecom) messages and files with 6-figure customer numbers.
Step 2: Converting the old customer numbers in your software to new customer numbers.

The schedule for these changes in two phases is given in the figure below. (Click to enlarge)

This website provides information on how to modify the software and convert the number.

We recommend that you read the Guide for implementing the FloraHolland customer number first. You will also find more detailed information by clicking the following links,

Modifying FlorEcom messages
Modifying PlantConnect.nl files
Modifying MPS files
Modifying 'Administrative collection' for buyers
Modifying 'Administrative collection' for Cultra
Modifying invoice message for collective transporters
Converting customer numbers
Overview software suppliers FloraHolland