FIX: "2 timecard(s) for this employee and period already exist" error when you try to enter a timecard for an earlier timesheet period in Microsoft Dynamics AX 2009

Hotfix information

A supported hotfix is available from Microsoft. There is a "Hotfix download available" section at the top of this Knowledge Base article. If you are encountering an issue downloading, installing this hotfix, or have other technical support questions, contact your partner or, if enrolled in a support plan directly with Microsoft, you can contact technical support for Microsoft Dynamics and create a new support request. To do this, go to the following Microsoft website:You can also contact technical support for Microsoft Dynamics by telephone by using these links for country specific telephone numbers. To do this, go to one of the following Microsoft websites:

PartnersCustomersIn special cases, charges that are ordinarily incurred for support calls may be canceled if a Technical Support Professional for Microsoft Dynamics and related products determines that a specific update will resolve your problem. The usual support costs will apply to any additional support questions and issues that do not qualify for the specific update in question.