diff --git a/tests/unit/handlers/spare.parts.handlers.test.js b/tests/unit/handlers/spare.parts.handlers.test.js
index 15399d3..771830d 100644
--- a/tests/unit/handlers/spare.parts.handlers.test.js
+++ b/tests/unit/handlers/spare.parts.handlers.test.js
@@ -285,7 +285,7 @@ test('handlers: registerSparePart fires part + Type-1 WO pushActions in parallel
   const { ctx, pushed } = buildRegisterCtx()
   const out = await handlers.registerSparePart(ctx, {
     ...userMeta(),
-    body: { rackId: PART_RACK, info: { deviceType: 'psu', deviceModel: 'PSU-WM-CB6_V5', serialNum: 'SN-99' } }
+    body: { rackId: PART_RACK, info: { deviceType: 'psu', deviceModel: 'PSU-WM-CB6_V5', serialNum: 'SN-99', notes: 'NOTES' } }
   })
 
   t.is(pushed.length, 2, 'one part action, one WO action')
@@ -293,7 +293,10 @@ test('handlers: registerSparePart fires part + Type-1 WO pushActions in parallel
   const woAction = pushed.find(p => p.params[0].rackId === WO_RACK)
   t.is(partAction.action, 'registerThing')
   t.is(woAction.action, 'registerThing')
+  t.alike(partAction.params[0].opts, {}, 'part registration carries empty opts so device racks (miners) accept it')
+  t.is(woAction.params[0].opts, undefined, 'WO registration carries no opts')
   t.is(woAction.params[0].info.type, 1, 'Type-1 WO')
+  t.is(woAction.params[0].info.notes, 'NOTES', 'operator note recorded on the register WO')
   t.is(woAction.params[0].info.partsMoves[0].fromLocation, null)
   t.is(woAction.params[0].info.partsMoves[0].toLocation, 'site.warehouse')
   t.is(woAction.params[0].info.partsMoves[0].partId, out.partId, 'WO partsMoves entry links to the pre-generated partId')
@@ -339,11 +342,13 @@ test('handlers: registerSparePartsBatch creates one shared register WO carrying
   t.is(woInfo.type, 1, 'single Type-1 register WO')
   t.is(woInfo.deviceCount, 3)
   t.is(woInfo.partsMoves.length, 3, 'register WO carries every part')
-  t.is(woInfo.note, 'Pallets 1-3', 'note recorded on the register WO')
+  t.is(woInfo.notes, 'Pallets 1-3', 'note recorded on the register WO')
   t.alike(woInfo.partsMoves.map(m => m.partId).sort(), out.parts.map(p => p.partId).sort(), 'WO links every returned part')
 
+  t.is(woAction.params[0].opts, undefined, 'WO registration carries no opts')
   for (const pa of partActions) {
-    t.is(pa.params[0].info.note, 'Pallets 1-3', 'note attached to each registered part')
+    t.is(pa.params[0].info.notes, 'Pallets 1-3', 'note attached to each registered part')
+    t.alike(pa.params[0].opts, {}, 'each part registration carries empty opts so device racks accept it')
   }
   t.is(out.parts.length, 3, 'returns a result row per part')
   t.alike(out.errors, [], 'no errors on happy path')
diff --git a/workers/lib/server/handlers/spare.parts.handlers.js b/workers/lib/server/handlers/spare.parts.handlers.js
index f94d7e0..5a113b2 100644
--- a/workers/lib/server/handlers/spare.parts.handlers.js
+++ b/workers/lib/server/handlers/spare.parts.handlers.js
@@ -205,6 +205,7 @@ async function registerSparePart (ctx, req) {
     deviceIdentifier: info.serialNum,
     createdBy: voter,
     createdAt: ts,
+    ...(info.notes ? { notes: info.notes } : {}),
     partsMoves: [{
       partId,
       fromLocation: null,
@@ -215,10 +216,10 @@ async function registerSparePart (ctx, req) {
     }]
   }
 
-  const pushSingleAction = (rack, id, info) => ctx.dataProxy.requestData('pushAction', {
+  const pushSingleAction = (rack, id, info, opts) => ctx.dataProxy.requestData('pushAction', {
     action: 'registerThing',
     query: { rack },
-    params: [{ rackId: rack, id, info }],
+    params: [{ rackId: rack, id, info, ...(opts ? { opts } : {}) }],
     voter,
     authPerms
   }, (res, arr) => {
@@ -227,7 +228,7 @@ async function registerSparePart (ctx, req) {
   })
 
   const [partResults, woResults] = await Promise.all([
-    pushSingleAction(rackId, partId, partInfo),
+    pushSingleAction(rackId, partId, partInfo, {}),
     pushSingleAction(workOrderRackId, woId, woInfo)
   ])
 
@@ -275,7 +276,7 @@ async function registerSparePartsBatch (ctx, req) {
       ...part,
       location: part.location ?? SPARE_PART_INITIAL_LOCATION
     }
-    if (note) partInfo.note = note
+    if (note) partInfo.notes = note
     return { partId: randomUUID(), part, partInfo }
   })
 
@@ -301,12 +302,12 @@ async function registerSparePartsBatch (ctx, req) {
       user: voter
     }))
   }
-  if (note) woInfo.note = note
+  if (note) woInfo.notes = note
 
-  const pushSingleAction = (rack, id, info) => ctx.dataProxy.requestData('pushAction', {
+  const pushSingleAction = (rack, id, info, opts) => ctx.dataProxy.requestData('pushAction', {
     action: 'registerThing',
     query: { rack },
-    params: [{ rackId: rack, id, info }],
+    params: [{ rackId: rack, id, info, ...(opts ? { opts } : {}) }],
     voter,
     authPerms
   }, (res, arr) => {
@@ -316,7 +317,7 @@ async function registerSparePartsBatch (ctx, req) {
 
   const [woResults, ...partResultsList] = await Promise.all([
     pushSingleAction(workOrderRackId, woId, woInfo),
-    ...prepared.map(({ partId, partInfo }) => pushSingleAction(rackId, partId, partInfo))
+    ...prepared.map(({ partId, partInfo }) => pushSingleAction(rackId, partId, partInfo, {}))
   ])
 
   const partsOut = prepared.map(({ partId }, i) => ({
diff --git a/workers/lib/server/routes/work.orders.routes.js b/workers/lib/server/routes/work.orders.routes.js
index c80b2f5..2bab74f 100644
--- a/workers/lib/server/routes/work.orders.routes.js
+++ b/workers/lib/server/routes/work.orders.routes.js
@@ -68,13 +68,7 @@ module.exports = (ctx) => [
     method: HTTP_METHODS.GET,
     url: ENDPOINTS.WORK_ORDER_BY_ID,
     schema: schemas.byId,
-    ...createCachedAuthRoute(
-      ctx,
-      (req) => ['work-orders', req.params.id],
-      ENDPOINTS.WORK_ORDER_BY_ID,
-      getWorkOrder,
-      [AUTH_PERMISSIONS.WORK_ORDER]
-    )
+    ...createAuthRoute(ctx, getWorkOrder, [AUTH_PERMISSIONS.WORK_ORDER])
   },
   {
     method: HTTP_METHODS.GET,
diff --git a/workers/lib/server/schemas/work.orders.schemas.js b/workers/lib/server/schemas/work.orders.schemas.js
index 63670f0..bd34700 100644
--- a/workers/lib/server/schemas/work.orders.schemas.js
+++ b/workers/lib/server/schemas/work.orders.schemas.js
@@ -132,6 +132,7 @@ const update = {
         type: 'object',
         additionalProperties: false,
         properties: {
+          issue: { type: 'string', minLength: 1, maxLength: 2000 },
           notes: { type: 'string', maxLength: 4000 },
           remarks: { type: 'string', maxLength: 4000 },
           site: { type: 'string', maxLength: 200 },