Sage 50: "You cannot change the number of a linked account
Sage 50 refuses to renumber the account because a module is set to post to it automatically; the link has to be moved before the number can change.
If Sage 50 has just told you “You cannot change the number of a linked account.” while you were editing your chart of accounts, it is not complaining about your typing. It is deliberately refusing to renumber an account because one of the program’s modules is set to post to that account automatically. The number stays locked for as long as that link exists.
What a linked account is
Sage 50, sold as Peachtree in the US and Simply Accounting in Canada, lets you designate certain accounts as destinations for automatic postings: the receivables and payables control accounts, payroll liability and expense accounts, sales tax accounts, inventory accounts, retained earnings, and similar. Once an account is designated, the program writes to it without asking, so it treats the account number as fixed infrastructure rather than a label you can edit. The block is a guard, not a malfunction: renumbering a live link could leave automatic postings pointing at nothing.
Step one: find out what the account is linked to
Before changing anything, make a fresh backup of the company file. Then review the linked account settings for each module and note every place this account number appears. Where those settings live depends on your version and edition, so we will not guess a menu path here; the goal is simply a list of the links that reference the account. Often one account turns out to be serving several modules at once, which is exactly why Sage 50 is protecting it.
Move the link, renumber, then restore it
Where your version allows it, the clean sequence is: point each affected module at a different account temporarily, renumber the original account, then point the modules back. Two cautions apply. Transactions already posted stay on the account no matter what its number is; only future postings follow the link. And depending on the file, an account that already carries transaction history may be locked from renumbering entirely, in which case no amount of unlinking will help. Renumbering an account with history intact is a data-editing job, not a settings job.
If you are renumbering for a conversion
A common reason for wanting tidy account numbers is an upcoming move to QuickBooks. Renumbering is not a prerequisite: a conversion maps your existing chart of accounts across, numbers and all, and forcing new numbers in Sage 50 usually costs more effort than it saves. Our Sage 50 to QuickBooks conversion page covers what carries over and how the chart of accounts is handled.
When the link will not clear
If the linked account settings show no reference to the account yet the message still appears, the file’s internal link information may be inconsistent or damaged. That is not something to fix by hand in the data; it calls for a proper Sage 50 database repair.
The useful next step: with a backup in hand, write down which modules post to the account. If unlinking and renumbering is permitted in your file, do it in that order and post a test transaction afterward to confirm everything lands where you expect. If the account cannot be renumbered, or the message persists with no visible link, send us the file for a free evaluation and we will quote the renumbering or repair with the transaction history left intact.