[SM] How to Apply a Credit to an SM Invoice

If any adjustment entries have been entered in other modules to apply these credits, they will first need to be deleted before this process is done.

(Recommended) If the Work Order the invoice originated from is still open, or you are willing to open a closed work order:
1. Create a new scope on the work order the invoice originated from with a negative misc. line that is the same amount of the credit that needs to be applied to the invoice.
2. Issue an invoice for this scope
3. Apply the same payment on the other invoice to this one in AR which will tie these together.

If the Work Order the invoice originated from is closed and you are not able to open it to create a new scope to apply the credit:
You will first need to create a new work order, and then you can follow the same steps outlined above to apply the credit to the invoice. You will 

The first option is recommended because it keeps everything closer together and it will be easier to go back and trace everything. There is no drawback from having to use the second method, it just will create more records that need to be tracked if you need to go back and find information.