diff --git a/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts b/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
index 674feff624..5639fc0739 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
@@ -434,7 +434,7 @@ export function getUpdateFrequencyFromCustomPeriod(
   } else if (days <= 7) {
     return {
       per: 'week',
-      updatedTimes: Math.round(7 / days),
+      updatedTimes: Math.round(7 / days), // FIXME: every 2 days will become 4 times a week here (7/2 = 3.5)
     }
   } else if (days) {
     return {
diff --git a/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts b/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
index 21b54ca1c0..15139b86bb 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
@@ -220,7 +220,7 @@ export function getISODuration(updateFrequency: UpdateFrequencyCustom): string {
       else duration.hours = Math.round(24 / updateFrequency.updatedTimes)
       break
     case 'week':
-      duration.days = Math.round(7 / updateFrequency.updatedTimes)
+      duration.days = Math.round(7 / updateFrequency.updatedTimes) // FIXME: 3 times a week will become every 2 days here (7/3 = 2.33)
       break
     case 'month':
       if (updateFrequency.updatedTimes <= 1) duration.months = 1