P 061650Z DEC 18 FM DFAS CLEVELAND OH//JFLS// TO AIG 4676// AIG 4678// AIG 4730// BT UNCLAS MSGID/GENADMIN/DFAS-CL CODE JFLS// SUBJ/"WHAT IF" SEPARATION SYSTEM (JPAM)// MILITARY PAY ADVISORY 38/18// POC/FIELD SERVICES/MPO-CL CODE JFLS/ DSN 580-5886/ COMMERCIAL (216) 522-5886// RMKS/1. The "WHAT IF" separation system (JPAM) will be unavailable from 21 December 2018 thru 2 January 2019, to update 2019 tax table and input 2019 mass rate changes. 2. On 3 January 2019, the "WHAT IF" separation system will be available to calculate the separation payment for separating members.//