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title: "SYS: Product Master File Lock issue"
canonical: "https://kb.myframeworks.com.au/space/PROSTIXV48DOC/31112633/SYS%3A%20Product%20Master%20File%20Lock%20issue"
format: markdown
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| <span style="color: #003366">**PROBLEM:**</span> | SYS: Product Master File Lock issue <span style="color: #000000">(Screen lock)</span> |
| <span style="color: #003366">**CAUSE:**</span> | If a user is updating records in the Product Master File, and at the same time a POS operator does a cash sale or other transaction for that product, this updates the stock on hand which can cause a record lock. |
| <span style="color: #003366">**SOLUTION:**</span> | To unlock a Product Master File that has been locked, perform the following:<br>1. From the **ProStix Main Menu** select **'System Administration'** then **'Utilities'** then **'Run a Program'**<br>2. Type **'sysulongtran.p'**, then select <enter>.<br>> Macro (nested-table)<br>3. Select <F1> to view any users that have locked a record for more than 1 minute.<br>4.** **Ask the user to exit out of the screen they have open. |
| <span style="color: #003366">**FOR FURTHER INFORMATION REFER TO:**</span> | [System Administration User Guide](https://sterlandsupport.atlassian.net/wiki/pages/createpage.action?spaceKey=DPUG&title=System%20Administration%20User%20Guide) |
| **<span style="color: #003366">IF THIS FAQ DOESN’T RESOLVE YOUR</span>****<span style="color: #003366"> ISSUE:</span>** | Contact <span style="color: #003366">[<u>Sterland Support</u>](https://sterlandsupport.atlassian.net/wiki/pages/createpage.action?spaceKey=CS&title=Sterland%20Support)</span>. |