needed to use several transactions

packages/bookshop/srv/admin-service.js

@@ -40,22 +40,31 @@ const _qlsToUpdateDifferences = (ownAddresses, remoteAddresses) =>
 
 bupaSrv.on('sap/messaging/ccf/BO/BusinessPartner/Changed', async msg => {
   console.log('>> Message:', msg.data)
+
   const BusinessPartner = msg.data.KEY[0].BUSINESSPARTNER
   const tx = cds.transaction()
   const selectQl = SELECT.from(ShippingAddresses).where({ BusinessPartner })
 
   const ownAddresses = await tx.run(selectQl)
+  await tx.commit()
   console.log('own:', ownAddresses)
   if (ownAddresses && ownAddresses.length > 0) {
     console.log('found')
     const txExt = bupaSrv.transaction()
+    try {
       const remoteAddresses = await txExt.run(selectQl)
-
-    await _qlsToUpdateDifferences(ownAddresses, remoteAddresses).map(async ql =>
-      await tx.run(ql)
-    )
+      const qlsToUpdateDifferences = _qlsToUpdateDifferences(ownAddresses, remoteAddresses)
+      const tx2 = cds.transaction()
+      if (qlsToUpdateDifferences.length) {
+        await Promise.all(qlsToUpdateDifferences.map(ql =>
+          tx2.run(ql)
+        ))
+        tx2.commit()
+      }
+    } catch (e) {
+      console.error(e)
+    }
   }
-  await tx.commit()
 })
 
 module.exports = cds.service.impl(function () {
@@ -73,21 +82,24 @@ module.exports = cds.service.impl(function () {
       ql.where(req.query.SELECT.where)
     }
 
+    try {
       const result = await txExt.run(ql)
-
       return result
+    } catch (e) {
+      console.error(e)
+    }
   }
 
   async function _fillAddress(req) {
     if (req.data.shippingAddress_AddressID) {
       const BusinessPartner = req.user.id
       const txExt = bupaSrv.transaction(req)
+      try {
         const response = await txExt.run(
           SELECT.from(ShippingAddresses).where({
             AddressID: req.data.shippingAddress_AddressID,
             BusinessPartner
-        })
-      )
+          }))
         if (response && response.length > 0) {
           const tx = cds.transaction(req)
           try {
@@ -99,6 +111,9 @@ module.exports = cds.service.impl(function () {
         } else {
           req.error('Shipping address not found.')
         }
+      } catch (e) {
+        console.error(e)
+      }
     }
   }