diff --git a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentScreenModel.kt b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentScreenModel.kt
index d44e220..1322604 100644
--- a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentScreenModel.kt
+++ b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentScreenModel.kt
@@ -216,10 +216,27 @@ internal class KomojuPaymentScreenModel(private val config: KomojuSDK.Configurat
         is PaymentMethod.Paidy -> state.value.paidyDisplayData.validate()
         is PaymentMethod.NetCash -> state.value.netCashDisplayData.validate()
         is PaymentMethod.BitCash -> state.value.bitCashDisplayData.validate()
+        is PaymentMethod.WebMoney -> state.value.webMoneyDisplayData.validate()
         is PaymentMethod.OffSitePayment -> true // No input required for Offsite payment
         else -> false
     }
 
+    private fun WebMoneyDisplayData.validate(): Boolean{
+        val prepaidNumberError = when {
+            prepaidNumber.isBlank() -> "The entered prepaid number cannot be empty"
+            prepaidNumber.length != 16 -> "The entered prepaid number is not valid"
+            else -> null
+        }
+        mutableState.update {
+            it.copy(
+                webMoneyDisplayData = it.webMoneyDisplayData.copy(
+                    prepaidNumberError = prepaidNumberError,
+                ),
+                )
+        }
+        return prepaidNumberError == null
+    }
+
     private fun BitCashDisplayData.validate(): Boolean {
         val idError = when {
             bitCashId.isBlank() -> "The entered net cash id cannot be empty"
@@ -349,7 +366,10 @@ internal class KomojuPaymentScreenModel(private val config: KomojuSDK.Configurat
             phoneNumber = state.value.paidyDisplayData.phoneNumber,
         )
         is PaymentMethod.PayEasy -> TODO()
-        is PaymentMethod.WebMoney -> TODO()
+        is PaymentMethod.WebMoney -> PaymentRequest.WebMoney(
+            paymentMethod = this,
+            prepaidNumber = state.value.webMoneyDisplayData.prepaidNumber,
+        )
         is PaymentMethod.OffSitePayment -> PaymentRequest.OffSitePaymentRequest(this)
     }
 
diff --git a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentUIState.kt b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentUIState.kt
index 89c411c..ba53c56 100644
--- a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentUIState.kt
+++ b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/KomojuPaymentUIState.kt
@@ -55,7 +55,7 @@ internal data class BitCashDisplayData(val bitCashId: String = String.empty, val
 
 internal data class NetCashDisplayData(val netCashId: String = String.empty, val netCashError: String? = null)
 
-internal data class WebMoneyDisplayData(val prepaidNumber: String = String.empty)
+internal data class WebMoneyDisplayData(val prepaidNumber: String = String.empty, val prepaidNumberError: String? = null)
 
 internal data class PaidyDisplayData(
     val fullName: String = String.empty,
diff --git a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/composables/WebMoneyForm.kt b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/composables/WebMoneyForm.kt
index 0f29bbe..56b1dcd 100644
--- a/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/composables/WebMoneyForm.kt
+++ b/android/src/main/java/com/komoju/android/sdk/ui/screens/payment/composables/WebMoneyForm.kt
@@ -38,6 +38,7 @@ internal fun WebMoneyForm(
             onValueChange = {
                 onWebMoneyDisplayDataChange(webMoneyDisplayData.copy(prepaidNumber = it))
             },
+            error = webMoneyDisplayData.prepaidNumberError,
         )
         Spacer(modifier = Modifier.height(16.dp))
         PrimaryButton(
diff --git a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/entities/PaymentRequest.kt b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/entities/PaymentRequest.kt
index e124d3e..23f3459 100644
--- a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/entities/PaymentRequest.kt
+++ b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/entities/PaymentRequest.kt
@@ -10,4 +10,5 @@ sealed interface PaymentRequest {
     data class OffSitePaymentRequest(override val paymentMethod: PaymentMethod.OffSitePayment) : PaymentRequest
     data class NetCash(override val paymentMethod: PaymentMethod.NetCash, val netCashId: String) : PaymentRequest
     data class BitCash(override val paymentMethod: PaymentMethod.BitCash, val bitCashId: String) : PaymentRequest
+    data class WebMoney(override val paymentMethod: PaymentMethod.WebMoney, val prepaidNumber: String) : PaymentRequest
 }
diff --git a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/dtos/PaymentRequestDto.kt b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/dtos/PaymentRequestDto.kt
index 461a285..68f357e 100644
--- a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/dtos/PaymentRequestDto.kt
+++ b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/dtos/PaymentRequestDto.kt
@@ -42,6 +42,13 @@ internal data class PaymentRequestDto(@SerialName("payment_details") val payment
                     prepaidNumber = paymentRequest.bitCashId,
                 ),
             )
+
+            is PaymentRequest.WebMoney -> PaymentRequestDto(
+                paymentDetails = PaymentDetails(
+                    type = "bit_cash",
+                    prepaidNumber = paymentRequest.prepaidNumber,
+                ),
+            )
         }
     }
 
diff --git a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/mappers/PaymentMapper.kt b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/mappers/PaymentMapper.kt
index ff39912..f9f14ca 100644
--- a/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/mappers/PaymentMapper.kt
+++ b/shared/src/commonMain/kotlin/com/komoju/mobile/sdk/remote/mappers/PaymentMapper.kt
@@ -38,7 +38,7 @@ internal object PaymentMapper {
             type = type.orEmpty(),
         )
 
-        "net_cash", "bit_cash" -> Payment.Completed(
+        "net_cash", "bit_cash", "web_money" -> Payment.Completed(
             amount = payment.amount.orEmpty(),
             currency = payment.currency.orEmpty(),
             status = PaymentStatus.fromString(payment.status.orEmpty()),