diff --git a/eeos/src/main/java/com/blackcompany/eeos/program/application/model/converter/ProgramRequestConverter.java b/eeos/src/main/java/com/blackcompany/eeos/program/application/model/converter/ProgramRequestConverter.java
index a0686e2a..54f06c13 100644
--- a/eeos/src/main/java/com/blackcompany/eeos/program/application/model/converter/ProgramRequestConverter.java
+++ b/eeos/src/main/java/com/blackcompany/eeos/program/application/model/converter/ProgramRequestConverter.java
@@ -40,6 +40,7 @@ public ProgramModel from(Long memberId, CommandProgramRequest source, Long progr
 				.id(programId)
 				.title(source.getTitle())
 				.content(source.getContent())
+				.githubUrl(source.getProgramGithubUrl())
 				.programDate(DateConverter.toEpochSecond(source.getDeadLine()))
 				.programCategory(ProgramCategory.find(source.getCategory()))
 				.programType(ProgramType.find(source.getType()))
diff --git a/eeos/src/main/java/com/blackcompany/eeos/target/application/model/AttendModel.java b/eeos/src/main/java/com/blackcompany/eeos/target/application/model/AttendModel.java
index 771e1b4c..b45dc640 100644
--- a/eeos/src/main/java/com/blackcompany/eeos/target/application/model/AttendModel.java
+++ b/eeos/src/main/java/com/blackcompany/eeos/target/application/model/AttendModel.java
@@ -35,6 +35,14 @@ public String getStatus() {
 		return status.getStatus();
 	}
 
+	public boolean isAttended(){
+		return (!this.status.equals(AttendStatus.NONRESPONSE) && !this.status.equals(AttendStatus.NONRELATED));
+	}
+
+	public boolean isRelated() {
+		return !this.status.equals(AttendStatus.NONRELATED);
+	}
+
 	public static AttendModel of() {
 		return AttendModel.builder().status(AttendStatus.NONRELATED).build();
 	}
@@ -52,7 +60,6 @@ public static AttendModel of(Long memberId, Long programId) {
 	}
 
 	private void validateChange(String afterStatus) {
-		canChange();
 		isSameBeforeStatus(afterStatus);
 	}
 
@@ -60,16 +67,6 @@ private void validateChangeByManager(String beforeStatus) {
 		isSameBeforeStatus(beforeStatus);
 	}
 
-	private void canChange() {
-		if (AttendStatus.isSame(status.getStatus(), AttendStatus.NONRELATED)) {
-			throw new DeniedSaveAttendException();
-		}
-
-		if (!AttendStatus.isSame(status.getStatus(), AttendStatus.NONRESPONSE)) {
-			throw new DeniedChangeAttendException();
-		}
-	}
-
 	private void isSameBeforeStatus(String status) {
 		if (!AttendStatus.isSame(status, this.status)) {
 			return;
diff --git a/eeos/src/main/java/com/blackcompany/eeos/target/application/service/AttendService.java b/eeos/src/main/java/com/blackcompany/eeos/target/application/service/AttendService.java
index 33220b3e..6dda6829 100644
--- a/eeos/src/main/java/com/blackcompany/eeos/target/application/service/AttendService.java
+++ b/eeos/src/main/java/com/blackcompany/eeos/target/application/service/AttendService.java
@@ -20,6 +20,8 @@
 import com.blackcompany.eeos.target.application.dto.converter.ChangeAttendStatusConverter;
 import com.blackcompany.eeos.target.application.dto.converter.QueryAttendActiveStatusConverter;
 import com.blackcompany.eeos.target.application.dto.converter.QueryAttendStatusResponseConverter;
+import com.blackcompany.eeos.target.application.exception.DeniedChangeAttendException;
+import com.blackcompany.eeos.target.application.exception.DeniedSaveAttendException;
 import com.blackcompany.eeos.target.application.exception.NotFoundAttendException;
 import com.blackcompany.eeos.target.application.exception.NotStartAttendException;
 import com.blackcompany.eeos.target.application.model.AttendModel;
@@ -88,8 +90,11 @@ public QueryAttendStatusResponse findAttendInfo(final Long programId, final Stri
 	@Override
 	public ChangeAttendStatusResponse changeStatus(final Long memberId, final Long programId) {
 		AttendModel model = getAttend(memberId, programId);
+
 		ProgramModel program = findProgram(programId);
 
+		validateAttend(program, model);
+
 		AttendModel changedModel = model.changeStatus(program.getAttendMode().getMode());
 
 		AttendEntity updated = attendRepository.save(attendEntityConverter.toEntity(changedModel));
@@ -124,8 +129,10 @@ public QueryAttendActiveStatusResponse getAttendInfo(Long programId, String acti
 		return queryAttendActiveStatusConverter.of(response);
 	}
 
-	private void validateAttend(ProgramModel model) {
-		if (model.getAttendMode().equals(ProgramAttendMode.END)) throw new NotStartAttendException();
+	private void validateAttend(ProgramModel programModel, AttendModel attendModel) {
+		if (programModel.getAttendMode().equals(ProgramAttendMode.END)) throw new NotStartAttendException();
+		if(attendModel.isAttended()) throw new DeniedChangeAttendException();
+		if(!attendModel.isRelated()) throw new DeniedSaveAttendException();
 	}
 
 	private ProgramModel findProgram(final Long programId) {