diff --git a/api-ref/source/v2/os-vol-transfer-v2.inc b/api-ref/source/v2/os-vol-transfer-v2.inc
index e02e558cdd0..58d2bafa024 100644
--- a/api-ref/source/v2/os-vol-transfer-v2.inc
+++ b/api-ref/source/v2/os-vol-transfer-v2.inc
@@ -61,6 +61,12 @@ Create volume transfer
 
 Creates a volume transfer.
 
+**Preconditions**
+
+* The volume ``status`` must be ``available``
+* Transferring encrypted volumes is not supported
+* If the volume has snapshots, those snapshots must be ``available``
+
 Response codes
 --------------
 
diff --git a/api-ref/source/v3/os-vol-transfer-v3.inc b/api-ref/source/v3/os-vol-transfer-v3.inc
index 2b17f5d5ce0..3fd8e2089b3 100644
--- a/api-ref/source/v3/os-vol-transfer-v3.inc
+++ b/api-ref/source/v3/os-vol-transfer-v3.inc
@@ -61,6 +61,12 @@ Create a volume transfer
 
 Creates a volume transfer.
 
+**Preconditions**
+
+* The volume ``status`` must be ``available``
+* Transferring encrypted volumes is not supported
+* If the volume has snapshots, those snapshots must be ``available``
+
 Response codes
 --------------
 
diff --git a/api-ref/source/v3/vol-transfer-v3.inc b/api-ref/source/v3/vol-transfer-v3.inc
index 7eb532efb71..716a5dbe52a 100644
--- a/api-ref/source/v3/vol-transfer-v3.inc
+++ b/api-ref/source/v3/vol-transfer-v3.inc
@@ -66,6 +66,13 @@ Create a volume transfer
 
 Creates a volume transfer.
 
+**Preconditions**
+
+* The volume ``status`` must be ``available``
+* Transferring encrypted volumes is not supported
+* If the volume has snapshots, those snapshots must be ``available`` unless
+  ``no_snapshots=True``
+
 Response codes
 --------------