@@ -48,6 +48,10 @@ func Resolve(c *gin.Context) {
 		}
 
 		txErr := models.DB.Transaction(func(tx *gorm.DB) error {
+			seqNo, err := nextSeqNo(tx)
+			if err != nil {
+				return err
+			}
 
 			// Upsert EntityVersion.
 			var ev models.EntityVersion
Original file line number	Diff line number	Diff line change
`@@ -48,6 +48,10 @@ func Resolve(c *gin.Context) {`
`48`	`48`	`}`
`49`	`49`
`50`	`50`	`txErr := models.DB.Transaction(func(tx *gorm.DB) error {`
	`51`	`+ seqNo, err := nextSeqNo(tx)`
	`52`	`+ if err != nil {`
	`53`	`+ return err`
	`54`	`+ }`
`51`	`55`
`52`	`56`	`// Upsert EntityVersion.`
`53`	`57`	`var ev models.EntityVersion`