How To Fix VL346 - Number assignment is not possible; sales document &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: VL -

• Message number: 346

• Message text: Number assignment is not possible; sales document &1 already exists

What causes this issue?

You have entered a document number from the
<DS:GLOS.3526B523AFAB52B9E10000009B38F974>number range interval</> for
internal <DS:GLOS.3526B526AFAB52B9E10000009B38F974>number assignment
</>. However, a sales document already exists with the number &V1&.

System Response

You can choose a number from the number range interval for internal
document number assignment, if you want to close the gaps between the
numbers assigned by the system. However, this is not possible if there
is already a sales document for the number you have chosen. The system
does not transfer this number for the new delivery.

How to fix this error?

Choose another document number, for which there is no delivery or
choose a document number from the number range interval for external
number assignment.
If necessary, contact your system administrator who will tell you which
document numbers are still free.

Error message extract from SAP system. Copyright SAP SE.