When a shop order is closed with a SODIFF entry &  re- opened for some reason,  counter SODIFF +/- entries are generated. And again upon closing, new SODIFF entry is created.

• Say a shop order is closed with a SODIFF- entry,

• When the Shop order is re-opened a SODIFF+ entry is generated. It will act as the exact opposite of the initially created SODIFF- entry. The Accounting postings will be the exact opposite credit/Debit entries of the initially created SODIFF- record.

• Once the Shop order is closed again, another SODIFF- entry similar to initially created SODIFF- entry will be created with exact same postings.