This image shows three boxes at the top, from left to right: BPEL Engine, Cache, and Database. Vertical lines are attached to the bottoms of each box. Below the boxes are several horizontal lines. There is a horizontal line labeled put with an arrow pointing from the BPEL Engine box to the Cache box. There is a horizontal line labeled object found: JPA- read version attribute with an arrow pointing from the BPEL Engine box to the Database box. There is a horizontal line labeled object NOT found or version did not match JPA - send Object with an arrow pointing from the BPEL Engine box to the Database box.