
There is a document of this type with a later posting date
In the sales or purchasing document you have tried to add, you have specified a posting date that is earlier than the posting date of the last sales document of the same type.
According to your company's configuration, it is not allowed to create sales and purchasing documents with posting date earlier than today's date (the checkbox: Block documents with earlier Posting Date is selected in .
To add the document with the earlier posting date:
Choose the OK button to approve the message.
Leave the document open, and from SAP Business One Main Menu choose and deselect the checkbox: Block documents with earlier Posting Date. Choose Update.
Return to the sales or purchasing document, and choose the Add button again. The same message appears, but now there are two options: OK and Cancel.
To add the sales or purchasing document with the earlier posting date, choose the OK button.